NDA-II 2025 (General Ability Test) Official Paper (Held On: 14 Sept, 2025) (Previous Year Paper)

The correct answer is 'Option 2'.

 

Key Points

• Twentieth century advances in agriculture do not seem sustainable due to the increased cost of agricultural production.
• The passage states: "Since twentieth century advances, given increasing costs, do not seem sustainable..." This directly links the lack of sustainability to increased costs.
• Other options are not supported by the passage.
• Option 1: The passage does not say that the advances fail to meet human needs.
• Option 3: The passage does not mention that these advances are outdated.
• Option 4: The passage does not state that the advances are sustainable because they are intensive.

Therefore, the correct answer is Option 2.

 

Additional Information

• Option 1: Incorrect, as the passage does not say that advances fail to meet human needs.
• Option 3: Incorrect, as there is no mention of the advances being outdated.
• Option 4: Incorrect, as intensity is not the reason for unsustainability given in the passage.

The correct answer is 'Option 1'.

 

Key Points

• The passage directly states that global population growth has pushed farmers and herders into areas unsuited to intensive agriculture.
• The relevant line is: "Global population growth, while showing signs of slowing down, has pushed farmers and herders into areas unsuited to intensive agriculture..."
• Other options are not supported by the passage in this context.
• Option 2: Industrialisation is not mentioned as a cause for this migration.
• Option 3: Water scarcity is mentioned as a problem, but not as the reason for farmers moving to unsuitable areas.
• Option 4: Desertification is described as an effect, not the primary cause pushing farmers into new areas.

Therefore, the correct answer is Option 1.

 

Additional Information

• Option 2: Incorrect, as industrialisation is not cited as the reason in the passage.
• Option 3: Incorrect, as water scarcity is a problem mentioned, but not the direct cause.
• Option 4: Incorrect, as desertification is a described outcome, not the push factor.

The correct answer is 'Option 4'.

 

Key Points

• The passage lists several causes for ecological degradation, including global population growth, chemical runoffs, and desertification.
• Option 1: Global population growth is mentioned as a factor accelerating ecological disruptions.
• Option 2: Excess use of chemicals (chemical runoffs) is said to have compounded pollution problems.
• Option 3: Desertification is described as severe in the last hundred years.
• Option 4: World War II
• World War II is referenced only in relation to the shrinking of tropical forests since then, not as a direct cause of ecological degradation according to the passage.

Therefore, the correct answer is Option 4.

 

Additional Information

• Option 1: Incorrect, as it is clearly stated as a cause of ecological problems.
• Option 2: Incorrect, as chemical runoffs are directly linked to pollution and ecological degradation.
• Option 3: Incorrect, as desertification is specifically described as an ecological problem in the passage.

The correct answer is 'Option 4'.

The correct answer is 'Option 1'.

 

Key Points

• The passage concludes: "we may remain hopeful about humankind's agricultural prospects, but we can scarcely look forward optimistically at the end of the first quarter of the twenty-first century."
• This shows the author maintains hope, but is also sceptical about the future, reflecting a mixed outlook.
• Other options do not accurately capture the author's nuanced view.
• Option 2: Incorrect, as the author is not "very hopeful."
• Option 3: Incorrect, as the author is not solely sceptical.
• Option 4: Incorrect, as the author expresses both hope and scepticism.

Therefore, the correct answer is Option 1.

 

Additional Information

• Option 2: Incorrect, as the author has reservations and is not wholly hopeful.
• Option 3: Incorrect, as the author does not express only scepticism.
• Option 4: Incorrect, as the author clearly demonstrates both hope and scepticism.

The correct answer is: Option (Invasion) i.e. Invasion.

Key Points

• The word “incursion” means a sudden or brief invasion or attack, especially a hostile one; an act of entering a place that is not yours. (आक्रमण / हमला)
• Example: There was an incursion into enemy territory by the special forces.
• “Invasion” refers to the act of entering a place with the intention of taking control, often by force; it is a hostile entry. (आक्रण / चढ़ाई)
• Example: The invasion of natural habitats has led to the extinction of many species.
• Therefore, “invasion” is the word from the passage that means “incursion”.

Therefore, the correct answer is- Invasion

Additional Information

Here are the other options explained along with their Hindi meanings and example sentences:

• Reserves (भंडार): Supplies of a commodity not needed for immediate use but available if required.
• Example: The country maintains large reserves of oil for emergencies.
• Desertification (मरुस्थलीकरण): The process by which fertile land becomes desert.
• Example: Overgrazing has led to severe desertification in the region.
• Catastrophes (आपदा/प्रलय): Sudden events causing great damage or suffering; disasters.
• Example: The earthquake and subsequent flood were true catastrophes for the city.

The correct answer is Option 1.

 

Key Points

• Indirect Speech: Ayushi told the group that they had had enough of suffering that day and it was time to march forward.
• Key Conversions:
• "We have had enough of suffering today" becomes "they had had enough of suffering that day"
• Pronoun "we" changes to "they" to match indirect speech.
• Present perfect tense "have had" changes to past perfect "had had" in indirect speech.
• Time reference "today" changes to "that day" in indirect speech.
• "It is time to march forward" becomes "it was time to march forward"
• Present tense "is" changes to past tense "was" in indirect speech.
• Reporting verb:
• Direct: "said to"
• Converted to: "told" to maintain proper reporting style in indirect speech.
• Punctuation and Format:
• No quotation marks in indirect speech.
• Proper use of conjunctions like "that" to introduce the reported statement.

Therefore, the correct answer is Option 1.

 

Correct Sentence: Ayushi told the group that they had had enough of suffering that day and it was time to march forward.

 

Additional Information

• Option 2: "Ayushi asked the group that they had had enough of suffering this day and it was time to march forward."
• Incorrect reporting verb "asked" instead of "told" alters meaning.
• Time reference "this day" is not correctly converted to "that day."
• Option 3: "Ayushi told the group that they had enough of suffering and that it is time to march forward."
• Tense inconsistency: "had enough" should be "had had enough" in indirect speech.
• Present tense "is" should be changed to past tense "was."
• Option 4: "Ayushi told the group that we had had enough of suffering this day and it was time to march forward."
• Incorrect pronoun "we" instead of "they."
• Time reference "this day" should be "that day."

The correct answer is Option 1.

 

Key Points

• Indirect Speech: The Captain regretted that they had lost the match by one point.
• Key Conversions:
• "Alas!" is converted to "regretted"
• Direct expression of sorrow ("Alas!") is appropriately conveyed as "regretted" in indirect speech.
• Tense:
• Direct: "lost"
• Indirect: "had lost"
• The past perfect tense ("had lost") is used in indirect speech to show that the action was completed in the past.
• Pronouns:
• "We" (direct speech) is converted to "they" (indirect speech), maintaining third-person perspective.
• Punctuation and Format:
• In indirect speech, quotation marks are removed.
• The sentence structure is adjusted to maintain a clear flow in indirect speech.

Therefore, the correct answer is Option 1.

 

Correct Sentence: "The Captain regretted that they had lost the match by one point."

 

Additional Information

• Option 2: "The Captain regretted that they lost the match by one point."
• Incorrect tense: "lost" should be "had lost" to align with the rules of indirect speech.
• Option 3: "The Captain exclaimed that they had lost the match by one point."
• Incorrect reporting verb: "exclaimed" does not convey the sense of sorrow as accurately as "regretted."
• Option 4: "The Captain told the team that they had lost the match by one point."
• Incorrect reporting verb: "told" does not convey the emotion of regret.

The correct answer is Option 2.

 

Key Points

• Indirect Speech: Alok asked Sheela where she had been the week before.
• Key Conversions:
• "Where were you last week" becomes "where she had been the week before"
• Direct question "Where were you" is converted to indirect question "where she had been".
• Pronoun "you" is changed to "she" to match indirect speech.
• Time expression "last week" is changed to "the week before".
• Reporting verb:
• Direct: "asked"
• Indirect: "asked", maintaining the questioning tone.
• Punctuation and Format:
• Direct speech is enclosed in quotation marks.
• Starts with a capital letter "Where" and ends with a question mark "?".
• Reporting clause follows the quoted speech.

Therefore, the correct answer is Option 2.

 

Correct Sentence: "Alok asked Sheela where she had been the week before."

 

Additional Information

• Option 1: "Alok told Sheela where she had been the week before."
• The verb "told" is incorrect in the context of asking a question; "asked" is appropriate.
• Option 3: "Alok asked Sheela where she was the week before."
• The verb tense "was" is incorrect; it should be "had been".
• Option 4: "Alok asked Sheela where she had been the last week."
• Time expression "the last week" is less standard and less accurate than "the week before".

The correct answer is Option 1.

 

Key Points

• Passive voice structure: The object of the active voice sentence becomes the subject of the passive voice sentence.
• In the active voice, the sentence is: "The king who the people loved built the castle five centuries ago."
• To convert to passive voice: Place the object "the castle" at the beginning.
• Change the active verb form "built" to "was built" (past simple passive).
• Add the preposition "by" followed by the original subject "the king who was loved by the people."
• Ensure the time phrase "five centuries ago" remains at the end of the sentence for clarity.

Therefore, the correct answer is Option 1.

 

Correct Sentence: "The castle was built five centuries ago by the king who was loved by the people."

 

Additional Information

• Option 2: "The castle was built five centuries ago by the king who loved the people." – Incorrect as it changes the meaning of the original sentence.
• Option 3: "The castle built five centuries ago by the king loved by the people." – Incorrect as it does not follow proper passive voice structure.
• Option 4: "The castle was built five centuries ago by the people who were loved by the king." – Incorrect as it changes the subject and meaning of the sentence.

The correct answer is Option 1.

 

Key Points

• Passive voice structure: The object of the active voice sentence becomes the subject of the passive voice sentence.
• In the active voice, the sentence is: "The company has recruited four hundred engineers who will have to complete an internship for three weeks."
• To convert to passive voice: Place the object "four hundred engineers" at the beginning.
• Change the active verb form "has recruited" to "have been recruited" (present perfect passive).
• Ensure that the second clause is restructured correctly to retain the meaning in passive voice.

Therefore, the correct answer is Option 1.

 

Correct Sentence: "Four hundred engineers have been recruited by the company and an internship of three weeks will have to be completed by them."

 

Additional Information

• Option 2: "Four hundred engineers have been recruited by the company and they will have to complete an internship of three weeks." – Incorrect as the second clause remains in active voice.
• Option 3: "The company has been recruited by four hundred engineers and an internship of three weeks will have to be completed by them." – Incorrect as it changes the meaning of the sentence.
• Option 4: "Four hundred engineers have been recruited by the company. Internship of three weeks will have had to be completed by them." – Incorrect as it misuses the tense ("will have had to be completed").

The correct answer is 'Option (1)' i.e. 'Seldom means hardly ever and often means time and again'.

Key Points

• Seldom: Hardly ever or rarely (बहुत कम)
• Example: She seldom goes to the gym.
• Often: Time and again or frequently (अक्सर)
• Example: He often visits his grandparents on weekends.

The correct answer is 'Option 2'.

Key Points 

• Overview: It refers to a general idea or assessment (सामान्य दृष्टिकोण).
• Example: The manager provided an overview of the team's performance.
• Review: It refers to an evaluation or analysis (समीक्षा करना).
• Example: She reviewed the document carefully before signing.

The correct answer is 'Option (1)' i.e. 'Overcome means triumph over and succeed means to achieve something'.

Key Points

• Overcome: To triumph over or defeat something (किसी चीज़ पर विजय प्राप्त करना)
• Example: He managed to overcome his fear of public speaking.
• Succeed: To achieve something or attain a desired outcome (सफल होना)
• Example: She worked hard and succeeded in her exams.

The correct answer is 'Option (2)' i.e. 'Embed means implant and imbue means instil'.

Key Points

• Embed: To implant or fix something firmly (स्थायी रूप से स्थापित करना)
• Example: The journalist embedded himself with the army unit.
• Imbue: To instil a quality, feeling, or idea deeply into someone or something (गहराई तक भरना)
• Example: The teacher imbued a sense of responsibility in her students.

Therefore, the correct answer is- 'Option 2'.

The correct answer is 'Option (2)' i.e. 'Emancipate means liberate and empower means authorise'.

Key Points

• Emancipate: To liberate or set free (मुक्त करना)
• Example: The new law was passed to emancipate women from oppression.
• Empower: To authorise or give power to someone (अधिकार देना)
• Example: The program was designed to empower youth with leadership skills.

The correct answer is: Option 1 i.e. inculcate.

Key Points

• The word "instil" means to gradually introduce or implant an idea, attitude, or feeling into someone's mind. (बिठाना, स्थापित करना)
• Example: Parents should instil good moral values in their children.
• "Inculcate" refers to teaching or instilling an idea or habit by persistent instruction. (सिखाना, बिठाना)
• Example: The teacher managed to inculcate a love for reading in her students.
• Hence, the word "inculcate" is nearest in meaning to "instil."

Therefore, the correct answer is: Option 1 i.e. inculcate.

Additional Information

Here are the other options explained along with their Hindi meanings and example sentences:

• Infer (अनुमान लगाना): To deduce or conclude information from evidence and reasoning rather than explicit statements.
• Example: From his tone, I could infer that he was upset.
• Eradicate (समाप्त करना): To destroy or remove something completely.
• Example: The government is working hard to eradicate poverty.
• Unlike (अलग): Different from something or someone.
• Example: Unlike his brother, he prefers reading books over playing sports.

The correct answer is: Option 1 (Commitment).

Key Points

• The word "allegiance" refers to loyalty or commitment to a superior, group, or cause. (निष्ठा, वफादारी)
• Example: The citizens expressed their allegiance to the new government.
• "Commitment" means the state or quality of being dedicated to a cause, activity, or purpose. (प्रतिबद्धता)
• Example: Her commitment to her work is truly admirable.
• Since "commitment" aligns closely with the meaning of "allegiance" as loyalty or dedication, it is the correct answer.

Therefore, the correct answer is: Option 1 (Commitment).

Additional Information

Here are the other options explained along with their Hindi meanings and example sentences:

• Disloyalty (अविश्वास): The quality of not being loyal to a person, group, or cause.
• Example: The soldier was punished for his disloyalty to his country.
• Understanding (समझ): The ability to comprehend or grasp the meaning of something.
• Example: Her understanding of the situation was remarkable.
• Unlikely (असंभव): Not likely to occur or be true.
• Example: It is unlikely that it will rain today.

The correct answer is: Mystery.

Key Points

• The word "inscrutability" means something that is difficult to understand or interpret; it refers to something mysterious or enigmatic in nature. (अस्पष्टता / रहस्यमयता)
• Example: The inscrutability of her smile left everyone guessing about her real intentions.
• "Mystery" refers to something that is unknown, puzzling, or not easily explained. It closely aligns with the meaning of "inscrutability." (रहस्य)
• Example: The mystery of the missing artifact baffled the detectives for weeks.
• Hence, we can conclude that the word nearest in meaning to "inscrutability" is "mystery."

Therefore, the correct answer is: Mystery.

Additional Information

Here are the other options explained along with their Hindi meanings and example sentences:

• Clearness (स्पष्टता): Refers to the quality of being clear or easy to understand.
• Example: The clearness of her instructions made it easy for everyone to follow the rules.
• Comprehensibility (समझने योग्य): Refers to the quality of being understandable or intelligible.
• Example: The teacher ensured the comprehensibility of the lesson by explaining every concept in detail.
• Seriousness (गंभीरता): Refers to the quality of being solemn, earnest, or sincere.
• Example: His seriousness in solving the problem impressed everyone in the team.

The correct answer is: Dubious.

Key Points

• The word "dodgy" refers to something or someone that is unreliable, dishonest, or questionable. It often implies doubt or suspicion about the person’s integrity or actions. (संदिग्ध)
• Example: The dodgy salesman's promises were too good to be true.
• "Dubious" means something that is doubtful or not to be relied upon. It is closely related to the meaning of "dodgy," often implying suspicion or lack of trust. (संदिग्ध)
• Example: She made a dubious claim about her qualifications, which raised eyebrows.
• Hence, the word closest in meaning to 'dodgy' is 'dubious'.

Therefore, the correct answer is: Dubious.

Additional Information

Here are the other options explained along with their Hindi meanings and example sentences:

• Principled (सिद्धांतवादी): Refers to someone who strictly adheres to a set of moral or ethical guidelines.
• Example: The judge was known for his principled decisions, always prioritizing fairness.
• Dishonest (बेईमान): Refers to someone who behaves in an untruthful or deceitful manner.
• Example: The dishonest employee was caught embezzling funds from the company.
• Painful (दर्दनाक): Refers to something that causes physical or emotional pain.
• Example: Losing her childhood home was a painful experience for her.

The correct answer is: Squally.

Key Points

• The word "inclement" means unpleasantly cold or wet weather, often used to describe harsh or stormy conditions. (अप्रसन्न या खराब मौसम)
• Example: The picnic was canceled due to inclement weather.
• "Squally" refers to weather characterized by sudden, violent gusts of wind, often accompanied by rain or storms. (झोंकेदार या तूफानी)
• Example: The squally winds made it difficult for the fishermen to navigate their boats.
• Hence, we can infer that the nearest meaning of 'inclement' is 'squally'.

Therefore, the correct answer is: Squally.

Additional Information

Here are the other options explained along with their Hindi meanings and example sentences:

• Calm (शांत): Free from disturbance or strong emotions; peaceful.
• Example: The sea was calm, and the gentle waves lapped against the shore.
• Pleasant (सुखद): Giving a sense of happy satisfaction or enjoyment.
• Example: We had a pleasant evening walking along the beach.
• Indigent (निर्धन): Poor or lacking the basic necessities of life.
• Example: Charitable organizations often work to provide support to indigent communities.

The correct answer is Option 1.

Key Points

• The passage discusses the origins and meaning of the term "Sufism."
• Sentence Q comes first in the sequence because it introduces the derivation of the term "Sufism" from "suf" (wool).
• Sentence R follows as it provides another possible derivation, "safa" (purity).
• Sentence S comes next as it clarifies the actual term used for Sufism in Islamic texts, "tasawwuf."
• Sentence P concludes the sequence, summarizing historians’ understanding of the term in different ways.
• The correct sequence is QRSP.

Coherent paragraph after rearrangement:

"According to some scholars, it is derived from suf, meaning wool. Others derive it from safa, meaning purity. The word used for Sufism in Islamic texts is tasawwuf. Historians have understood this term in several ways."

The correct answer is Option 1.

Key Points

• The passage begins with a historical context about Al-Biruni's birthplace and his early education, followed by his linguistic skills, association with Greek philosophers, and eventual journey to Ghazni.
• Sentence R is the first in the sequence as it discusses the educational background of Al-Biruni:
• "Khwarizm was an important centre of learning, and Al-Biruni received the best education available at the time."
• Sentence Q follows as it elaborates on Al-Biruni's linguistic proficiency:
• "He was well versed in several languages; Syriac, Arabic, Persian, Hebrew, and Sanskrit."
• Sentence S is the third because it mentions his familiarity with Greek philosophers despite not knowing the Greek language:
• "However he did not know Greek, although he was familiar with the works of Plato and other Greek philosophers."
• Sentence P is the fourth as it describes the turning point in his life when he was taken to Ghazni by Sultan Mahmud:
• "In 1017, when Sultan Mahmud invaded Khwarizm, he took several scholars back to his capital, Ghazni: Al-Biruni was one among them."
• The correct sequence is QSRP.

Coherent paragraph after rearrangement:

"Khwarizm was an important centre of learning, and Al-Biruni received the best education available at the time. He was well versed in several languages; Syriac, Arabic, Persian, Hebrew, and Sanskrit. However he did not know Greek, although he was familiar with the works of Plato and other Greek philosophers. In 1017, when Sultan Mahmud invaded Khwarizm, he took several scholars back to his capital, Ghazni: Al-Biruni was one among them."

The correct answer is Option 1.

Key Points

• The correct sequence of the middle sentences is SPRQ.
• Explanation of the sequence:
• Sentence S introduces the founding of the empire in the fourteenth century, providing the historical starting point.
• Sentence P elaborates on the empire's geographical expanse during its peak, building upon its establishment.
• Sentence R describes the eventual decline of Vijayanagara due to the sacking and desertion of the city in 1565.
• Sentence Q concludes with the memory of the empire's existence, tying it to the local people's recollection of Hampi.

Coherent paragraph after rearrangement:

"Vijayanagara or ‘city of victory’ was the name of both a city and an empire. The Empire was founded in the fourteenth century. In its heyday it stretched from the river Krishna in the north to the extreme south of the Indian peninsula. In 1565 the city was sacked and subsequently deserted. Although it fell into ruin in the seventeenth-eighteenth centuries, it continued to live in the memories of the people who inhabited the Krishna-Tungabhadra doab. They remembered it as Hampi, a name derived from that of the local mother goddess, Pampadevi."

The correct answer is Option 1.

Key Points

• The paragraph discusses the transformation of India's economy post-liberalisation and globalisation.
• Sentence P is the first in the sequence as it highlights the initial state of India's economy and the balance of payment crisis:
• "India’s 3% rate of growth and a set of emergent circumstances led to a balance of payment crisis in the early 1990s."
• Sentence S follows P, as it introduces the measures taken in response to the crisis:
• "In a landmark budget in 1991, responding to the emergent crisis, India delicenced many industries and liberalised its economic policies."
• Sentence Q comes next, detailing the specific steps taken to ease business and remove restrictions:
• "Ease of business was ensured, and the requirement for import licences, and production quotas, were removed."
• Sentence R is the last in the sequence, elaborating on how India overcame the crisis and stopped relying on IMF loans post-1993:
• "Apart from these measures India also took a loan from the IMF to tide over the crisis, but after 1993, India has not taken another loan from the IMF."
• The correct sequence is QSRP.

Coherent paragraph after rearrangement:

"India’s 3% rate of growth and a set of emergent circumstances led to a balance of payment crisis in the early 1990s. In a landmark budget in 1991, responding to the emergent crisis, India delicenced many industries and liberalised its economic policies. Ease of business was ensured, and the requirement for import licences, and production quotas, were removed. Apart from these measures India also took a loan from the IMF to tide over the crisis, but after 1993, India has not taken another loan from the IMF."

The correct answer is Option 1.

Key Points

• The paragraph begins by introducing the underprivileged population and exploitation they face.
• Sentence Q is the first of the jumbled sentences as it highlights one form of exploitation:
• "One such form of exploitation in our country has been begar or forced labour without payment."
• Sentence S follows as it elaborates on a related form of exploitation:
• "Another closely related form of exploitation is buying and selling of human beings and using them as slaves."
• Sentence R comes next, as it emphasizes the exploitation the marginalised face:
• "The marginalised are often subjected to exploitation by their fellow human beings."
• Sentence P concludes the sequence as it references the Constitution's stance on such exploitation:
• "Both of these are prohibited under the Constitution of India."
• The correct sequence is QSRP.

Coherent paragraph after rearrangement:

"In many countries, there are millions of people who are underprivileged and deprived. One such form of exploitation in our country has been begar or forced labour without payment. Another closely related form of exploitation is buying and selling of human beings and using them as slaves. The marginalised are often subjected to exploitation by their fellow human beings. Both of these are prohibited under the Constitution of India. In the past forced labour was imposed by landlords, moneylenders, and other wealthy persons."

The correct answer is 'in any case'.

 

Key Points

• The discourse marker "in any case" is used to indicate that the speaker is making a statement regardless of any other factors or conditions.
• In this context, the speaker implies that the person would not listen to them regardless of whether they tell them what they think or not.
• Other options like "meanwhile" and "in the meantime" are not suitable here as they are used to indicate simultaneous actions or events, which is not applicable in this sentence.

Therefore, the correct answer is Option 2.

 

Complete Sentence: "I can’t be bothered to tell him what I think; in any case he would not listen to me."

 

Additional Information

• Option 1: "meanwhile" is incorrect because it refers to events occurring simultaneously.
• Option 3: "in the meantime" is incorrect as it indicates a temporary period between two events.
• Option 4: "somehow" is incorrect as it refers to achieving something in an unspecified way, which is irrelevant here.

The correct answer is 'On the contrary'.

 

Key Points

• The phrase "On the contrary" is used to introduce a contrasting idea or to refute a previous statement.
• The context of the sentence requires a discourse marker that indicates a contrary or opposite idea, which aligns with the meaning of "On the contrary".
• Options 2, 3, and 4 do not convey the required contrast or relevance in this sentence.

Therefore, the correct answer is Option 1.

 

Complete Sentence: "On the contrary, if the referee points his fingers, this indicates that someone has done something wrong."

 

Additional Information

• Option 2: "Whatever more" is irrelevant and does not fit the context.
• Option 3: "Briefly" suggests summarization, which is not suitable here.
• Option 4: "As regards" is used to introduce a topic, but it does not fit the meaning of the sentence.

The correct answer is 'Incidentally'.

 

Key Points

• The discourse marker "Incidentally" is used to introduce a new topic or to connect ideas in a casual or related manner.
• In this sentence, "Incidentally" is appropriate because it introduces a query about whether the person has been to the local library, which might not be directly related to the ongoing conversation.
• Options 1, 2, and 3 do not fit the context or provide the correct discourse marker for this sentence.

Therefore, the correct answer is Option 4.

 

Complete Sentence: "Incidentally, have you been to the local library yet?"

 

Additional Information

• Option 1: "Sort of" is incorrect because it does not serve as a proper discourse marker in this context.
• Option 2: "Frankly" is incorrect; it is used to express an honest opinion, which does not fit the sentence.
• Option 3: "All the same" is incorrect as it implies contrast or concession, which is not required here.

The correct answer is 'To a large extent'.

 

Key Points

• The discourse marker "To a large extent" is the most appropriate choice in this context as it conveys the idea of the statement being largely true.
• The sentence highlights that women are healthier and living longer than ever before, and "To a large extent" appropriately introduces this generalization.
• Options 2, 3, and 4 are not suitable as they fail to match the required tone and context of the sentence.

Therefore, the correct answer is Option 1.

 

Complete Sentence: "To a large extent women are healthier and are living longer than ever before: indeed on an average, they can expect to live five years longer than men."

 

Additional Information

• Option 2: "As regards" is incorrect because it does not fit the sentence structure or meaning appropriately.
• Option 3: "As far as" is incorrect as it does not suitably introduce the generalization in this context.
• Option 4: "Turning now" is incorrect because it indicates a shift to a new topic, which is not the case in this sentence.

The correct answer is 'what is more'.

 

Key Points

• The phrase "what is more" is used to add an additional point or emphasize something in a sentence, making it the most appropriate discourse marker in this context.
• The sentence highlights two aspects: finding a career the speaker loves and getting paid reasonably for it. "What is more" effectively connects these ideas.
• Options 1, 2, and 4 are incorrect as they do not fit the context or purpose of the sentence.

Therefore, the correct answer is Option 3.

 

Complete Sentence: "The difference is that I have been fortunate to find a career that I love and, what is more, I am getting paid reasonably for it."

 

Additional Information

• Option 1: "briefly" is incorrect because it implies summarizing, which does not fit the sentence.
• Option 2: "broadly speaking" is incorrect as it refers to generalizations, which is not the intent here.
• Option 4: "in conclusion" is incorrect as it is used to summarize a discussion, not to emphasize or add a point.

The correct answer is 'In general'.

 

Key Points

• The discourse marker "In general" is used to provide a broad or overall perspective.
• The sentence discusses the Government of India’s policy, which is broadly applicable to improving relations with its neighbours.
• Options 1, 2, and 3 do not fit the context as they do not convey the intended meaning.

Therefore, the correct answer is Option 4.

 

Complete Sentence: "In general, the Government of India has followed the policy of trying to improve relations with its neighbours."

 

Additional Information

• Option 1: "Particular" is incorrect as it does not provide a general perspective and changes the meaning of the sentence.
• Option 2: "Knowingly" is incorrect as it implies intentionality, which is not the focus of the sentence.
• Option 3: "Otherwise" is incorrect because it suggests contrast, which is irrelevant in this context.

The correct answer is 'As per reports'.

 

Key Points

• The discourse marker "As per reports" is appropriate as it suggests that the sentence is based on news, facts, or findings.
• The other options do not fit the context:
• Option 2: Accordingly is incorrect as it indicates a logical result, which does not fit here.
• Option 3: Likewise is incorrect as it is used to indicate similarity, which is not relevant here.
• Option 4: Briefly is incorrect as it is used for summarizing, which is not suitable for the context.

Therefore, the correct answer is Option 1.

 

Complete Sentence: "As per reports this issue is likely to be discussed when the Council meets next."

 

Additional Information

• Option 2: "Accordingly" is inappropriate because it implies a conclusion or result, not a reference to reports.
• Option 3: "Likewise" is irrelevant because it suggests similarity, which does not match the sentence's context.
• Option 4: "Briefly" is unsuitable as it implies a summary, which does not align with the sentence's intent.

The correct answer is 'In that case'.

 

Key Points

• The phrase "In that case" is a discourse marker used to refer to a specific situation or condition that has been mentioned or implied in the context.
• The sentence suggests that consulting a physician is necessary in a particular scenario, making "In that case" the most appropriate choice.
• Options 2, 3, and 4 are incorrect because they either do not fit the context or are grammatically inappropriate.

Therefore, the correct answer is Option 1.

 

Complete Sentence: "In that case, you needed to consult a physician to have a clear idea of what the disease is about."

 

Additional Information

• Option 2: "In these case" is grammatically incorrect because "these" should match a plural noun, but "case" is singular.
• Option 3: "Likewise" is incorrect as it indicates similarity, which does not align with the sentence's context.
• Option 4: "Henceforth" is incorrect because it refers to future actions and is irrelevant to the given sentence.

The correct answer is 'Notably'.

 

Key Points

• The discourse marker "Notably" is used to highlight or emphasize a significant point, making it the most appropriate choice in this context.
• The sentence emphasizes the fact that the current account deficit in the year-ago period stood at $1.3 billion or 0.2% of the GDP, which is a notable detail.
• Option 1: "Particularly" is incorrect because it does not fit the context of emphasizing a specific fact.
• Option 3: "Seriously" is inappropriate as it conveys a tone of gravity rather than emphasis.
• Option 4: "Unknowingly" is incorrect as it implies a lack of awareness, which is irrelevant here.

Therefore, the correct answer is Option 2.

 

Complete Sentence: "Notably, in the year-ago period, the current account deficit stood at $1.3 billion or 0.2% of the GDP."

 

Additional Information

• Option 1: "Particularly" is often used to specify or single out something, but it does not emphasize a key fact as effectively as "Notably."
• Option 3: "Seriously" conveys a sense of importance or gravity, but it is not appropriate in the context of providing a fact or statistic.
• Option 4: "Unknowingly" suggests unawareness, which does not align with the context of this sentence.

The correct answer is 'Because of'.

 

Key Points

• The discourse marker "Because of" is used to indicate the reason or cause of something.
• In the given sentence, the phrase "the records have been completely undermined by shoddy book-keeping" indicates a cause-and-effect relationship, which makes "Because of" the most appropriate choice.
• Options 2, 3, and 4 do not fit the context of the sentence and are grammatically or contextually incorrect.

Therefore, the correct answer is Option 1.

 

Complete Sentence: "Because of the records have been completely undermined by shoddy book-keeping."

 

Additional Information

• Option 2: "As such" is not appropriate as it does not establish a cause-and-effect relationship in this context.
• Option 3: "Forever" is irrelevant to the sentence meaning.
• Option 4: "Hence" is used to indicate a result, not a cause, and does not fit here.

The correct answer is: Option 2 i.e. An inappropriate remark.

Key Points

• The word "Infelicity" refers to something that is inappropriate or unsuitable, particularly in the context of language or behavior. (अनुचितता)
• Example: His infelicity in making jokes about serious topics offended many people.
• The correct word here is "An inappropriate remark" because it fits the definition of "infelicity" as something ill-chosen or not suitable, especially in communication. (अनुचित टिप्पणी)
• Example: The politician's infelicity during the speech led to public criticism.
• Hence, we can conclude that the meaning of "Infelicity" is accurately captured by the phrase "An inappropriate remark".

Therefore, the correct answer is: Option 2.

Additional Information

Here are the other options explained along with their Hindi meanings and example sentences:

• Option 1: Disloyalty towards one’s nation (अपने राष्ट्र के प्रति विश्वासघात): Refers to betrayal or lack of allegiance to one's country.
• Example: Disloyalty towards one’s nation is considered a serious offense.
• Option 3: To kill or destroy (मारना या नष्ट करना): Refers to the act of causing death or destruction.
• Example: The wildfire had the power to kill or destroy everything in its path.
• Option 4: To touch or push gently (हल्के से छूना या धक्का देना): Refers to a soft or gentle physical interaction.
• Example: He nudged his friend to wake him up during the lecture.

The correct answer is: Option 3 i.e. Something that naturally follows.

Key Points

• The word "Corollary" means a proposition that follows naturally from something already proven or established. (परिणामस्वरूप)
• Example: If everyone in a group agrees to work together, the corollary is that the task will be completed faster.
• Something that naturally follows refers to a logical consequence or result of a particular action or situation. (प्राकृतिक परिणाम)
• Example: A corollary of good health practices is an increase in lifespan.

Therefore, the correct answer is: Option 3.

Additional Information

Here are the other options explained along with their Hindi meanings and example sentences:

• Option 1: Something that is too expensive (कुछ जो बहुत महंगा हो): Refers to something that costs a lot of money.
• Example: The luxury car was too expensive for me to buy.
• Option 2: Something that looks real but does not really exist (कुछ जो असली लगता है लेकिन वास्तव में मौजूद नहीं है): Refers to something that is deceptive in appearance.
• Example: The mirage in the desert looked like water but did not really exist.
• Option 4: Something resembling a coal mine (कोयला खदान जैसा कुछ): Refers to an object or place that looks or functions like a coal mine.
• Example: The dark cave resembled a coal mine but was actually a tourist attraction.

The correct answer is: Option 1 i.e. "Situation in which you are confused about what to do".

Key Points

• The word "Quandary" refers to a state of perplexity or doubt, often when making a difficult decision. (दुविधा)
• Example: She found herself in a quandary over whether to accept the new job offer or stick with her current position.
• The correct word, "Quandary", signifies confusion or uncertainty, particularly when faced with a decision. (दुविधा)
• Example: The student was in a quandary about which course to choose for her future studies.

Therefore, the correct answer is: Option 1.

Additional Information

Here are the other options explained along with their Hindi meanings and example sentences:

• Option 2: Situation in which two people or group argue (तर्क-वितर्क वाली स्थिति): This refers to a disagreement or conflict between two parties.
• Example: A heated argument broke out between the two teams over the referee's decision.
• Option 3: Situation in which no progress can be made (गतिरोध): This refers to a deadlock or impasse where further progress is not possible.
• Example: The negotiations reached an impasse, and no agreement could be reached.
• Option 4: Situation in which a relationship becomes friendlier (संबंध में सुधार): This refers to a reconciliation or improvement in relations between two parties.
• Example: After months of disagreement, there was finally a thaw in their relationship.

The correct answer is: Option 1 i.e. Prediction based on past experiences.

Key Points

• The word "Presumption" refers to an idea that is taken to be true based on probabilities or past experiences without definitive proof. (पूर्वानुमान)
• Example: The presumption that it would rain was based on the dark clouds in the sky.
• "Prediction based on past experiences" is the correct interpretation of presumption, where assumptions are made based on prior knowledge or occurrences. (अतीत के अनुभवों के आधार पर भविष्यवाणी)
• Example: His presumption about the test difficulty was based on his experience with past exams.

Therefore, the correct answer is: Option 1.

Additional Information

Here are the other options explained along with their Hindi meanings and example sentences:

• Judgement made with certainty (निश्चितता के साथ किया गया निर्णय): A decision or opinion made with complete assurance or confidence.
• Example: The court's judgement was made with certainty based on the available evidence.
• Decision based on facts (तथ्यों के आधार पर निर्णय): A conclusion or resolution derived from verified and objective information.
• Example: The manager made a decision based on facts provided in the report.
• Opinion formed before having all the facts (सभी तथ्यों को जाने बिना बनाई गई राय): A biased or preconceived idea formed without full understanding or evidence.
• Example: Her opinion about the new policy was formed before having all the facts.

The correct answer is: Option 1 i.e. Too confident about one’s own achievements.

Key Points

• The word "Smug" means showing excessive pride or satisfaction with oneself or one's achievements. (आत्मसंतुष्ट)
• Example: He had a smug expression on his face after receiving the award.
• The correct word here is "Smug," which refers to being too confident about one’s achievements or abilities. (आत्मसंतुष्ट)
• Example: She always feels smug about her ability to solve problems quickly.

Therefore, the correct answer is: Option 1.

Additional Information

Here are the other options explained along with their Hindi meanings and example sentences:

• Option 2: Too eager to help or obey someone important (महत्वपूर्ण व्यक्ति की सहायता या आज्ञापालन में बहुत उत्सुक):
• Example: His obsequious behavior toward his boss was evident in every meeting.
• Option 3: Too emotional or dramatic (बहुत भावनात्मक या नाटकीय):
• Example: She tends to become too emotional during family discussions.
• Option 4: Too eager to bottle up conflicts (विवादों को दबाने के लिए बहुत उत्सुक):
• Example: He avoided confrontation and was always eager to bottle up conflicts.

The correct answer is Option (4) i.e. QSPR

Key Points

• The part (Q) – "whereas traditional fairy tales" – correctly introduces the contrastive clause and is the natural beginning of the sentence.
• It is logically followed by (S) – "were designed for the entertainment" – which completes the verb phrase and tells us their original purpose.
• Next comes (P) – "of children they also contain deeply embedded" – which links the idea that, apart from entertaining children, these tales have something more.
• Finally, (R) – "moral lessons that are relevant-even for adults" – completes the idea by specifying what they contain, making the full sentence meaningful and grammatically correct.

Thus, the correct rearranged sentence is:

"Whereas traditional fairy tales were designed for the entertainment of children they also contain deeply embedded moral lessons that are relevant-even for adults."

Additional Information

• Option 1 (RPQS): Starting with "moral lessons that are relevant-even for adults" makes the sentence look like a fragment and leaves the contrast and subject unclear at the beginning.
• Option 2 (QSRP): This disturbs the logical flow after stating the purpose; placing "moral lessons" too late makes the sentence feel awkward.
• Option 3 (RPSQ): Beginning with "moral lessons" and then jumping to "of children they also contain deeply embedded" creates a confusing and grammatically unsound opening.
• Option 4 (QSPR): is correct because it maintains a smooth progression: introduction of the tales (Q), their purpose (S), the shift to an additional quality (P), and finally, the nature of that quality (R).

The correct answer is Option (1) i.e. QPSR

Key Points

• The sentence begins with "that sporting activities are an integral part" which is correctly indicated by part (Q).
• Following "Q," the phrase "of school education is an ineluctable truth" (P) logically continues the sequence, explaining the subject of the sentence.
• The next part, "that underscores the learning process and contributes" starts elaborating on the importance of these activities, indicated by (S).
• Ending with "meaningfully towards the overall growth of a student" (R) completes the sentence by describing the significance of the activities.

Therefore, the correct answer is QPSR.

Additional Information

• Option 2 (QSRP): This option starts with "that sporting activities are an integral part that underscores the learning process and contributes" but places "meaningfully towards the overall growth of a student" earlier, which disrupts the logical flow.
• Option 3 (RPSQ): This option starts with "meaningfully towards the overall growth of a student" which is an incorrect start to the sentence.
• Option 4 (QSPR): This option places "of school education is an ineluctable truth" at a later position, disrupting the structure of the sentence.

The correct answer is Option (3) i.e. QSPR

Key Points

• The sentence begins with the phrase "The beneficial outcome of," which is correctly indicated by part (Q).
• Following this, "a virtuous life is peace of mind and contentment" (QS) continues the logical sequence, making it clear what the outcome is.
• The next part, "on account of a life lived" continues the explanation further, which is indicated by (P).
• Ending with "well without retribution or rebuke" (R) completes the sentence by providing additional details about how the life was lived.

Therefore, the correct answer is QSPR.

Additional Information

• Option 1 (SRQP): This option starts with "is peace of mind and contentment," which disrupts the flow and clarity of the sentence.
• Option 2 (SPQR): This option starts with "a virtuous life is peace of mind on account of a life lived," which makes the sentence structure awkward and unclear.
• Option 4 (QSRP): This option starts with "The beneficial outcome of a virtuous life is peace of mind and contentment well without retribution or rebuke," which disrupts the clarity around the description of contentment.

The correct answer is Option (1) i.e. SQRP

Key Points

• The sentence logically begins with "it is widely believed that the parliamentary system differs" which is (S).
• The next part, "from a non-parliamentary system," which is (Q), follows S to continue the comparison logically.
• The next part, "in as much as the former is" (R), explains how the two systems differ.
• Finally, "more representative than the latter" (P) completes the sentence, concluding the comparison.

Therefore, the correct answer is SQRP.

Additional Information

• Option 2 (SPQR): This option creates an illogical sequence starting with "it is widely believed that the parliamentary system differs more representative than the latter," which is incomplete and grammatically incorrect.
• Option 3 (RSPQ): This option begins with "in as much as the former is it is widely believed that the parliamentary system differs," which disrupts the logical flow of the sentence.
• Option 4 (PSRQ): This option starts with "more representative than the latter it is widely believed that the parliamentary system differs," which results in a fragmented and confusing structure.

The correct answer is Option (4) i.e. SRQP

Key Points

• The sentence begins with the conditional clause "when service is done for," which is correctly indicated by part (S).
• Following the preposition "for," the reasons or motives must be listed. Part (R) ("exhibition or for fear of public opinion") logically completes this thought (SR).
• The next part, "it stunts the person offering the same and," starts the main clause by explaining the negative impact of such service, indicated by part (Q).
• Ending with "crushes the spirit behind the service" (P) completes the logical flow by providing the second consequence linked by the conjunction "and" in part (Q).

Therefore, the correct sequence is SRQP.

Additional Information

• Sequence PQRS: This starts with the result "crushes the spirit," making the following parts grammatically disconnected and redundant.
• Sequence RQPS: This starts with the motives "exhibition or for fear..." without a preceding verb or context, leading to an incomplete thought.
• Sequence QPSR: This places the conjunction "and" at the start of the relationship without a preceding clause, making the sentence structure collapse.

The correct answer is 'any further'.

 

Key Points

• The phrase "any further" is commonly used to denote progress or extent in situations involving comparison or prediction.
• In this context, the sentence compares the progress of the individual in their studies to what was predicted.
• Options 2, 3, and 4 are either incomplete or grammatically unsuitable for the given sentence.

Therefore, the correct answer is Option 1.

 

Complete Sentence: "It does not look like he is going any further in his studies than what was predicted by his school principal."

 

Additional Information

• Option 2: "further" is not specific enough in this context and lacks the emphasis provided by "any."
• Option 3: "farther" is typically used for physical distances, making it less appropriate here.
• Option 4: "any farther" is incorrect because "farther" refers to physical distances, not progress in studies.

The correct answer is 'Among'.

 

Key Points

• The preposition "Among" is used to describe a situation where something happens within a group or in the middle of a set of things or people.
• The sentence implies that the thief made a quiet getaway during the confusion, which involves a group or collective scenario, making "Among" the most appropriate choice.
• Options 2, 3, and 4 are incorrect in this context as they do not fit the grammatical or contextual requirement of the sentence.

Therefore, the correct answer is Option 1.

 

Complete Sentence: "Among all the confusion the thief made a quiet getaway."

 

Additional Information

• Option 2: "Amongst" is generally considered an archaic or poetic form of "Among" and is less commonly used in modern English.
• Option 3: "Amidst" is used to describe being surrounded by or in the middle of something but does not fit as naturally in this specific sentence structure.
• Option 4: "Amid" is also used to describe being in the middle of something but is less appropriate in this context than "Among."

The correct answer is 'special'.

 

Key Points

• The word "special" is the most suitable choice because it describes the expertise or unique skill of the surgeon.
• The sentence emphasizes the surgeon's exceptional ability, which makes "special" the correct option.
• Options 2, 3, and 4 are incorrect as they either do not fit the context or are grammatically inappropriate in this case.

Therefore, the correct answer is Option 1.

 

Complete Sentence: "The intricate operation on the patient required the expertise of a/an special surgeon."

 

Additional Information

• Option 2: "especial" is not commonly used in modern English and does not fit the context.
• Option 3: "specialist" is incorrect because it would imply a specific field of specialization rather than the general meaning of expertise.
• Option 4: "specialised" is incorrect because it implies a specific focus rather than a general sense of expertise.

The correct answer is 'fewer than'.

 

Key Points

• The phrase "fewer than" is used when referring to countable plural nouns.
• In this sentence, "students" is a countable noun, so "fewer" is required to indicate a smaller quantity. Additionally, "than" is the correct conjunction used for making comparisons.
• Options 1, 3, and 4 are grammatically incorrect in this context.

Therefore, the correct answer is Option 2.

 

Complete Sentence: "There are fewer than thirty students inside the classroom at any time."

 

Additional Information

• Option 1: "less than" is incorrect because "less" is properly used with uncountable or singular mass nouns (e.g., less water, less time).
• Option 3: "less then" is incorrect due to the misuse of "less" with a countable noun, and because "then" is an adverb of time, not a conjunction for comparison.
• Option 4: "fewer then" is incorrect because "then" is used to indicate time or sequence, whereas "than" is necessary to make a numerical comparison.

The correct answer is 'stranded'.

 

Key Points

• The word "stranded" refers to being left helpless or in a position from which one cannot leave.
• In the given sentence, the vehicles are immobile due to a sudden landslide, making "stranded" the most appropriate choice.
• Option 1: "stationery" is incorrect because it refers to writing materials; the term for being immobile is "stationary."
• Option 2: "stationed" is incorrect because it implies that the vehicles were intentionally placed or assigned to a spot, which is not the case here.
• Option 4: "straggle" is incorrect as it refers to moving slowly or being spread out, which does not fit the scenario.

Therefore, the correct answer is Option 3.

 

Complete Sentence: "There are many stranded vehicles on the highway due to a sudden landslide."

 

Additional Information

• Option 1: "stationery" refers to paper, envelopes, and other office materials.
• Option 2: "stationed" is typically used to describe someone or something assigned to a specific location for a purpose, which does not align with the context here.
• Option 4: "straggle" describes slow or scattered movement, which does not fit the description of vehicles being stuck.

Calculation

Given focal length of the concave lens, f = −0.5 m.

Power of a lens is defined as:

P = 1 / f

Substituting the value of f,

P = 1 / (−0.5)

P = −2.0 D

The negative sign indicates that the lens is concave.

Therefore, the correct answer is Option 4.

Calculation

This situation involves three mutually perpendicular directions:

⇒ direction of magnetic field

⇒ direction of current

⇒ direction of force (motion) on the conductor

Fleming’s left-hand rule is specifically used to determine the direction of force experienced by a current-carrying conductor in a magnetic field.

Right-hand thumb rule is used to find the direction of magnetic field due to current, not force.

Fleming’s right-hand rule applies to generators, and Hund’s rule is related to atomic structure.

Therefore, the correct answer is Option 2.

Calculation

One parsec is defined as the distance at which one astronomical unit subtends an angle of one arcsecond.

Numerically,

⇒ 1 parsec ≈ 206,265 astronomical units (A.U.)

Expressing this value in scientific notation:

⇒ 206,265 ≈ 2 × 10⁵

Hence,

⇒ 1 parsec ≈ 2 × 10⁵ A.U.

Therefore, the correct answer is Option 3.

Calculation

According to the second law of motion, the net force acting on a body is related to its motion.

⇒ Force is proportional to acceleration.

⇒ Force acts in the same direction as acceleration.

⇒ Force equals the time rate of change of momentum.

Momentum is given by:

⇒ p = m × v

Hence, force depends on how momentum changes with time, not on momentum itself.

Therefore, the statement saying that force is proportional to momentum is incorrect.

Therefore, the correct answer is Option 4.

Calculation

Initial temperature, T₁ = 310 K

Final temperature, T₂ = 340 K

Increase in temperature = T₂ − T₁ ⇒ 340 − 310 = 30 K

Temperature difference remains the same in Kelvin and Celsius.

Initial temperature in Celsius ⇒ 310 − 273 = 37°C

Final temperature in Celsius ⇒ 340 − 273 = 67°C

Increase in Celsius ⇒ 67 − 37 = 30°C

Thus, the temperature increase is 30°C.

Calculation

Work done by gravity depends only on the vertical displacement.

Work = m × g × h

⇒ m is the mass of the body

⇒ g is acceleration due to gravity

⇒ h is the vertical distance between initial and final positions

Gravity is a conservative force.

⇒ Work done is independent of the path followed ✔

⇒ Work done depends only on vertical separation ✔

⇒ Work done does not depend on the path ✔

⇒ Work done is zero for horizontal displacement ✔

The statement saying that work done depends on the path followed is incorrect.

Therefore, the correct answer is Option 3.

Calculation

Pressure is a scalar quantity.

⇒ It has magnitude only, not direction.

Pressure in a liquid increases with depth.

⇒ It does not decrease as we go deeper.

According to Newton’s third law:

⇒ Action and reaction forces act on different bodies, not on the same object.

The SI unit of pressure is pascal.

⇒ 1 pascal = 1 N/m².

Hence, the statement that pascal and N/m² represent the same unit is correct.

Therefore, the correct answer is Option 4.

Calculation

X-rays have wavelengths in the range of about 0.01 nm to 10 nm.

1 nm lies within this X-ray wavelength range.

10 nm lies at the boundary and generally falls in the ultraviolet region.

100 nm and 300 nm correspond to ultraviolet radiation, not X-rays.

Hence, among the given options, 1 nm represents X-ray radiation.

Therefore, the correct answer is Option 1.

Explanation:

In a telescope, the objective lens is meant to collect light from distant objects.

To gather sufficient light, it must have a larger aperture.

To properly focus nearly parallel rays from distant objects, it requires a larger focal length.

The eyepiece, in contrast, has a smaller focal length and smaller aperture for magnification.

⇒ Compared to the eyepiece, the objective lens has both a larger focal length and a larger aperture.

Therefore, the correct answer is Option 1.

Calculation:

The energy of a photon is given by the relation E = h × f.

Here, E represents energy, f represents frequency, and h is Planck’s constant.

The dimensional formula of energy is [M L² T⁻², while the dimensional formula of frequency is [T⁻¹].

From the relation h = E / f

⇒[h] = [M L² T⁻²] / [T⁻¹]

⇒ [h] = [M L² T⁻¹]

Angular momentum also has the dimensional formula [M L² T⁻¹], which matches that of Planck’s constant.

Therefore, the correct answer is Option 2.

Calculation:

Work done by a force depends on the relative direction of force and displacement.

The relation for work done is W = F × d × cos(θ), where θ is the angle between force and displacement.

When the displacement is perpendicular to the direction of force, θ = 90°.

cos(90°) = 0

⇒ W = F × d × 0

⇒ W = 0

This shows that no work is done when force acts perpendicular to the displacement.

Therefore, the correct answer is Option 3.

Explanation:

The magnetic field inside a very long current-carrying solenoid is considered.

According to Ampere’s circuital law, the magnetic field inside a solenoid depends on the current and the number of turns per unit length.

The relation is B = μ₀ × n × I.

Here, μ₀ is the permeability of free space, n is the number of turns per unit length, and I is the current.

For a very long solenoid, end effects are negligible.

⇒ The magnetic field remains the same at all points inside the solenoid.

This shows that the magnetic field inside a very long solenoid is uniform.

Therefore, the correct answer is Option 1.

Explanation:

The temperature to be measured is −250°C, which lies in the extremely low temperature range.

Mercury thermometers are unsuitable because mercury freezes at about −39°C.

Clinical thermometers are limited to human body temperature ranges and cannot measure extreme cold.

Alcohol thermometers are also unsuitable since alcohol freezes near −114°C, which is much higher than −250°C.

Thermocouple-based thermometers are designed to measure very wide temperature ranges, including extremely low temperatures.

⇒ Only a thermocouple can reliably measure −250°C.

Therefore, the correct answer is Option 4.

Explanation:

The quantity of heat required to change the state of a substance without any change in temperature is considered.

When unit mass of a liquid changes into vapour at constant temperature, the heat supplied does not raise temperature but is used for phase change.

This heat is defined as specific latent heat.

Specific heat relates to temperature change, thermal capacity refers to total heat required for a body, and heat energy is a general term.

⇒ The given definition matches specific latent heat.

Therefore, the correct answer is Option 2.

Explanation:

The condition described refers to the temperature at which a liquid’s vapour pressure equals the surrounding atmospheric pressure.

At this stage, bubbles of vapour form throughout the liquid and rise to the surface.

This characteristic temperature is defined as the boiling point.

Melting point relates to solid–liquid change, while the other options do not describe vapour pressure equality.

⇒ The given definition corresponds to the boiling point.

Therefore, the correct answer is Option 2.

Explanation:

Surface tension depends on the cohesive forces between molecules at the surface of a liquid.

With an increase in temperature, molecular kinetic energy increases.

This weakens the cohesive forces acting at the surface.

⇒ Surface tension decreases as temperature increases.

It does not remain constant, nor does it increase with temperature.

The change is not symmetric for both increase and decrease in temperature.

Therefore, the correct answer is Option 2.

Explanation:

The sinking or floating of a body in water depends on the comparison of densities.

If the density of a body is greater than the density of water, the buoyant force is insufficient to support it.

Density condition for sinking is expressed as:

ρ_body > ρ_water

⇒ When the density of water is less than the density of the body, the body sinks.

If densities are equal, the body remains suspended, and if the body’s density is lower, it floats.

This directly matches the stated condition.

Therefore, the correct answer is Option 2.

Explanation:

When a fielder catches a fast-moving ball, the ball’s momentum must reduce to zero.

According to the impulse–momentum relation, impulse equals change in momentum.

Impulse = Force × Time

For a fixed change in momentum, increasing the time of contact reduces the force.

⇒ Lower force results in smaller acceleration of the ball.

By pulling the hands backward, the fielder increases contact time.

This reduces impact force and prevents injury while catching the ball safely.

Therefore, the correct answer is Option 1.

Explanation:

The apparent raising of the bottom of a water-filled tank is an optical effect.

When light travels from water to air, its speed changes.

This causes the light rays to bend at the boundary between the two media.

⇒ The bending of light leads to an apparent shift in the position of the tank bottom.

This phenomenon is known as refraction of light.

Hence, the bottom appears raised due to refraction.

Therefore, the correct answer is Option 2.

Explanation:

The term SONAR is an acronym related to the use of sound waves.

SONAR stands for Sound Navigation and Ranging.

It is used to detect, locate, and determine the distance of objects under water.

⇒ The name reflects its function of navigation and ranging using sound.

Other expansions do not match the accepted scientific meaning.

Therefore, the correct answer is Option 3.

Explanation:

Electromagnetic waves can be arranged in order of increasing wavelength.

The general order is: Gamma rays < X-rays < Ultraviolet < Visible light < Infra-red < Microwaves < Radio waves.

From this sequence, X-rays and ultraviolet have much shorter wavelengths.

Infra-red has a longer wavelength than visible light but is still shorter than microwaves.

⇒ Among the given options, microwaves possess the longest wavelength.

Therefore, the correct answer is Option 3.

Explanation:

Static conditions refer to a situation where electric charges remain at rest.

In an insulator, charges are not free to move and hence remain localized where they are placed.

This allows an insulator to retain electric charge under static conditions.

In a conductor, charges are free to move and redistribute themselves, making it difficult to maintain localized static charge.

⇒ Under static conditions, an insulator can be charged.

Therefore, the correct answer is Option 1.

Explanation

A person can see nearby objects clearly but cannot see distant objects distinctly.

This visual behavior corresponds to Myopia.

In Myopia, light rays focus before reaching the retina ⇒ distant objects appear blurred while near objects remain clear.

The given condition matches this characteristic.

Therefore, the correct answer is Option 3: Myopia.

Explanation

The energy of a system is always conserved when no exchange of energy or matter occurs with the surroundings.

An isolated system satisfies this condition.

In such a system, total energy remains constant over time ⇒ energy conservation is guaranteed.

Non-isolated systems may exchange energy, so conservation is not ensured for the system alone.

Therefore, the correct answer is Option 1: Isolated only.

Explanation:

A ball of mass M is thrown upwards from point A, reaches the highest point B, and returns to A.

At point A, the ball has kinetic energy due to its velocity.

At point B, the velocity becomes zero ⇒ kinetic energy is zero, and the ball has only potential energy due to height.

According to conservation of energy:

Total energy at A = Total energy at B

⇒ K.E. at A = P.E. at B

This energy relation is correct for the motion.

Therefore, the correct answer is Option 1.

The correct answer is Sahajananda Saraswati.

Key Points

• Sahajananda Saraswati presided over the first session of the All India Kisan Sabha, held in Lucknow in April 1936. He was the founding president of the organization.
• The All India Kisan Sabha (AIKS) was established to address the issues of farmers, including their rights, grievances, and representation in the national freedom struggle.
• During this session, key objectives like improving the socio-economic conditions of farmers, abolishing feudal practices, and fighting for the redistribution of land were discussed.
• The Sabha provided a platform for farmers to unite and actively participate in the Indian independence movement, reflecting the growing awareness among the agricultural community.
• Sahajananda Saraswati was a prominent leader in the peasant movement and played a significant role in mobilizing farmers against exploitation.

Additional Information

• All India Kisan Sabha (AIKS):
• The AIKS was formed on 11 April 1936, at the Lucknow session of the Indian National Congress, during the presidency of Jawaharlal Nehru.
• Its primary goal was to promote the welfare of farmers and advocate for their rights in the socio-political framework of the country.
• The Sabha was closely associated with the Communist Party of India, which later influenced its ideology and policies.
• Sahajananda Saraswati:
• Sahajananda Saraswati was a freedom fighter, social reformer, and leader of the peasant movement in India.
• He was born in 1889 and dedicated his life to fighting for farmers' rights and opposing feudalism and exploitation.
• He authored several books, including "Jai Jawan Jai Kisan," where he articulated the struggles and aspirations of the peasant community.
• Other notable individuals mentioned in the options:
• R.G. Ranga: Often referred to as the "Father of the Indian Peasant Movement," Ranga was a prominent leader but did not preside over the first session of AIKS.
• Ram Manohar Lohia: Lohia was a socialist thinker and leader in India's freedom struggle but was not directly connected with the first AIKS session.
• Jayaprakash Narayan: Known for his involvement in the Quit India movement and later for leading the Total Revolution, he was not involved in presiding over the AIKS session.

Important Points

• Peasant Movements in India:
• Peasant movements like the AIKS were pivotal in raising awareness about the exploitation faced by farmers under the colonial regime and zamindari system.
• These movements played a crucial role in shaping India's freedom struggle, emphasizing the inclusion of farmers in the national movement.
• Legacy of AIKS:
• The All India Kisan Sabha continues to function, advocating for farmers' rights and addressing issues like land reforms, minimum support prices, and agrarian distress.
• It remains one of the oldest and largest farmer organizations in India.

The correct answer is E. V. Ramaswami Naicker.

Key Points

• E. V. Ramaswami Naicker, also known as Periyar, founded the Self-Respect Movement in 1925.
• This movement aimed at creating a society where individuals were treated equally, irrespective of their caste, religion, or gender.
• The Self-Respect Movement challenged the caste system and Brahminical dominance in Tamil Nadu and advocated for the rights of lower-caste individuals.
• Periyar emphasized the importance of rational thinking, self-respect, and equality, making significant contributions to social reform in India.
• The movement also inspired various socio-political reforms in Tamil Nadu, including efforts to eradicate untouchability and promote women's rights.

Additional Information

• About E. V. Ramaswami Naicker:
• Born on 17 September 1879, in Tamil Nadu, he was a prominent social activist and politician.
• Periyar is often referred to as the “Father of the Dravidian Movement” due to his efforts to promote Dravidian identity and culture.
• He vehemently opposed the imposition of Hindi and advocated for Tamil pride and Dravidian nationalism.
• Objectives of the Self-Respect Movement:
• To create a society free from caste-based discrimination and untouchability.
• To promote rational thinking and scientific temper while questioning religious orthodoxy and superstitions.
• To establish gender equality and empower women by opposing practices like child marriage and dowry.
• Impact of the Self-Respect Movement:
• It led to the emergence of Dravidian political parties like the Dravida Munnetra Kazhagam (DMK) and its offshoots.
• The movement played a significant role in reforms related to caste equality and women's rights in Tamil Nadu.
• Periyar’s ideas continue to influence social and political discourse in Tamil Nadu and beyond.
• Other Leaders Mentioned in the Options:
• Jyotiba Phule: A social reformer from Maharashtra, he worked for the upliftment of lower castes and women but did not found the Self-Respect Movement.
• Swami Vivekananda: A spiritual leader and philosopher who popularized Indian philosophy worldwide, especially the teachings of Vedanta.
• Dr. B.R. Ambedkar: The architect of the Indian Constitution and a prominent leader in the fight against caste discrimination, especially for Dalits.

Important Points

• The Self-Respect Movement was deeply intertwined with the broader anti-caste and social reform movements in India.
• Periyar’s advocacy for rationalism and equality laid the groundwork for several progressive reforms in Tamil Nadu.
• The movement remains a cornerstone of Tamil Nadu’s political and social history, continuing to inspire activism for equality and justice.

The correct answer is Shalabhoga.

Key Points

• Shalabhoga refers to land designated for the maintenance of educational institutions such as schools during the Chola dynasty.
• It was a special category of land mentioned in Chola inscriptions, highlighting the prioritization of education in ancient India.
• The Chola dynasty actively promoted education and ensured that specific land resources were allocated for the smooth functioning of schools and other learning centers.
• These lands were often donated by rulers or wealthy individuals, and the revenue generated from them was used for the upkeep of educational activities.
• Such inscriptions provide valuable insights into the administrative practices and socio-cultural priorities of the Chola Empire.

Additional Information

• Categories of Land in Chola Inscriptions:
• Tirunamattukkani: Land gifted to temples or for religious purposes, often to maintain the temple and its rituals.
• Shalabhoga: Refers to land allocated for the supply of goods or resources required for temple worship, including food offerings.
• Vellanvagai: Agricultural land used for cultivation, often granted to peasants or farmers for productive purposes.
• Pallichhandam: Land meant for the maintenance of schools, highlighting the emphasis on education during the Chola period.
• Chola Dynasty:
• The Chola dynasty ruled South India from approximately the 9th to the 13th century CE.
• Known for their administrative efficiency, temple architecture, and promotion of art, culture, and education.
• Their inscriptions are an essential source for understanding land revenue systems, governance, and socio-cultural priorities during their reign.
• Importance of Education in Chola Period:
• The Chola rulers actively supported education by establishing schools and providing resources for their maintenance.
• They believed in nurturing intellectual growth and ensuring the availability of educational opportunities for the people.
• Education was primarily focused on religious studies, arts, and sciences during this era.
• Role of Inscriptions in History:
• Inscriptions serve as a primary source of historical evidence for reconstructing the governance, socio-economic structures, and cultural practices of ancient civilizations.
• Chola inscriptions are particularly detailed in documenting land grants, administrative reforms, and religious donations.

Important Points

• Historical Context: The Chola dynasty emphasized education as a means to enhance societal development, reflected in their allocation of lands like Pallichhandam.
• Temple Economy: Temples served as centers of education, culture, and administration, supported by revenues from lands like Tirunamattukkani and Shalabhoga.
• Land Grants: The system of land grants ensured resources for various societal needs, including agriculture, education, and religious practices.
• Legacy: The Chola approach to governance and resource allocation set benchmarks for subsequent South Indian dynasties.

The correct answer is 1 and 3 only.

Key Points

• Statement 1: Lokamanya Tilak set up the Home Rule League at the Bombay Provincial Conference held at Belgaum in April 1916.
• This statement is correct.
• Lokamanya Tilak, a prominent freedom fighter and nationalist, established the Home Rule League during the Bombay Provincial Conference in Belgaum in April 1916.
• Tilak's Home Rule League aimed at self-governance and sought to mobilize Indians for achieving Swaraj (self-rule).
• Statement 2: Annie Besant announced the formation of Home Rule League in September 1916.
• This statement is incorrect.
• Annie Besant formed her Home Rule League earlier, in September 1916, to complement the efforts of Tilak.
• However, the statement incorrectly implies that she "announced" the formation in September 1916, whereas her league was already operational by then.
• Statement 3: To avoid friction, Tilak’s League was to work in Maharashtra (excluding Bombay city), Karnataka, Central Provinces, and Berar, and Besant’s League was given charge of the rest of India.
• This statement is correct.
• To prevent overlapping efforts and avoid friction between the two leagues, Tilak’s Home Rule League focused on Maharashtra (excluding Bombay city), Karnataka, Central Provinces, and Berar, while Annie Besant’s league operated in other parts of India.
• This division of territories allowed both leaders to effectively mobilize support for the Home Rule movement.

Additional Information

• Home Rule Movement in India:
• The Home Rule Movement was inspired by the Irish Home Rule Movement and sought self-governance for Indians within the British Empire.
• It gained momentum during 1916-1918, with leaders like Tilak and Annie Besant spearheading the campaign.
• The movement emphasized constitutional reforms and mobilized Indians through speeches, pamphlets, and newspapers.
• Key Objectives of Home Rule League:
• The primary goal was to achieve self-rule for India.
• It aimed to promote political education and awareness among Indians about their rights and responsibilities.
• The movement also sought to unite Indians across different regions and communities under the common cause of Swaraj.
• Role of Lokamanya Tilak:
• Tilak’s league operated in western and central India and focused on grassroots mobilization.
• He used newspapers like Kesari and Mahratta to spread the message of self-rule.
• Tilak’s slogan, "Swaraj is my birthright, and I shall have it," became a rallying cry for the movement.
• Role of Annie Besant:
• Annie Besant’s league focused on southern and eastern India, targeting educated Indians and urban elites.
• She extensively used her newspapers, "New India" and "Commonweal," to advocate for Home Rule.
• Her efforts brought international attention to India’s struggle for self-rule.
• Impact of the Home Rule Movement:
• The movement laid the foundation for future mass movements like the Non-Cooperation Movement and the Civil Disobedience Movement.
• It helped in uniting Indians across regions, religions, and communities.
• The British government responded by introducing limited reforms, such as the Montagu-Chelmsford Reforms of 1919.

Important Points

• The Home Rule Movement marked the beginning of a more organized and systematic approach to India’s struggle for independence.
• It highlighted the importance of political education and public participation in the freedom struggle.
• The movement also played a crucial role in popularizing the demand for Swaraj among ordinary Indians.
• Although the movement eventually faded, it left a lasting impact on India’s political landscape.

The correct answer is He was the founder of Widow Remarriage Association.

Key Points

• Ishwar Chandra Vidyasagar served as the Principal of the Sanskrit College, Calcutta, where he introduced several reforms, including the admission of students from lower castes. Hence, this statement is correct.
• He was a Government Inspector of Schools and made significant contributions to modernizing education in Bengal during his tenure. Hence, this statement is correct.
• Ishwar Chandra Vidyasagar also served as the Secretary of the Bethune School, the first institution for women's education in India, which aligned with his belief in promoting women's education. Hence, this statement is correct.
• While Vidyasagar was a strong proponent of widow remarriage and worked tirelessly for the passage of the Hindu Widows' Remarriage Act, 1856, he did not formally establish a "Widow Remarriage Association." This was a separate organization formed by Mahadev Govind Ranade. Hence, this statement is NOT correct.

Additional Information

• Contributions to Education:
• Ishwar Chandra Vidyasagar introduced significant reforms in the education system, especially for women and underprivileged communities.
• He played a pivotal role in modernizing the curriculum at Sanskrit College, making it inclusive and encouraging the study of modern subjects alongside traditional Sanskrit education.
• He was instrumental in the establishment of numerous schools, especially for girls, in Bengal.
• Advocacy for Widow Remarriage:
• Vidyasagar advocated for widow remarriage at a time when it was considered a social taboo.
• His tireless efforts and lobbying with the British administration led to the passing of the Hindu Widows' Remarriage Act of 1856, which legally allowed widow remarriage in India.
• Role in Social Reforms:
• Vidyasagar worked for the abolition of child marriage and promoted women's education.
• He believed in rationalism and humanism and used these principles to challenge societal norms and superstitions.
• Legacy:
• Known as the "Father of Bengali Prose," his contributions to the Bengali language and literature were immense. His simplified Bengali prose style made literature and education more accessible to the masses.
• He remains one of the most respected figures in Indian history, celebrated for his contributions to education and social reform.

Important Points

• Hindu Widows' Remarriage Act, 1856:
• This act was a landmark legislation that permitted Hindu widows to remarry, which was a revolutionary step in 19th-century India.
• The act was passed on July 26, 1856, thanks to Vidyasagar's relentless lobbying and advocacy.
• Bethune School:
• Founded in 1849 by John Elliot Drinkwater Bethune, it was the first girls' school in India.
• Ishwar Chandra Vidyasagar became its Secretary and worked to promote female education through the institution.
• Sanskrit College, Calcutta:
• Vidyasagar served as the Principal of this prestigious institution.
• He introduced reforms to modernize the education system, such as incorporating English and science into the curriculum.
• He also allowed students from all castes to enroll, challenging the caste-based discrimination prevalent at the time.
• Recognition:
• For his remarkable contributions, Ishwar Chandra Vidyasagar is often remembered as one of the pioneers of the Bengal Renaissance.
• His efforts laid the foundation for social and educational reforms in India, inspiring future reformers like Raja Ram Mohan Roy and Mahatma Gandhi.

The correct answer is A - 2, B - 3, C - 4, D - 1.

Key Points

• Vishnu Shastri Pundit (A - 2):
• He was a prominent social reformer known for his work towards widow remarriage.
• He founded the Widow Remarriage Association to promote the cause of remarriage for widows in a society deeply rooted in orthodox traditions.
• He played a key role in raising awareness about the plight of widows and advocating for their rights.
• Karsondas Muliji (B - 3):
• Karsondas Muliji was the editor of the Gujarati newspaper Satya Prakash.
• He used his newspaper as a platform to advocate for social reforms, including the education of women and caste equality.
• He is remembered for his reformist ideas and contributions to social progress in India.
• Debendranath Tagore (C - 4):
• Debendranath Tagore, a prominent figure in the Bengal Renaissance, was associated with the Tattvabodhini Sabha.
• The Tattvabodhini Sabha was established to promote the study of the Upanishads and was instrumental in spreading the ideas of the Brahmo Samaj.
• He worked for religious and social reform within Hindu society.
• Raja Rammohan Roy (D - 1):
• Raja Rammohan Roy, often referred to as the "Father of Modern India," was a social and religious reformer.
• He wrote extensively on the scientific origin of Hinduism and is linked to the text Vedic Physics.
• He founded the Brahmo Samaj, which aimed at reforming Hindu society by eliminating practices like sati and promoting education and equality.

Additional Information

• Widow Remarriage Association:
• Founded by Vishnu Shastri Pundit in the 19th century to address the social stigma associated with widow remarriage in India.
• The association played a pivotal role in creating awareness and lobbying for the legalization of widow remarriage.
• This effort led to the enactment of the Hindu Widows' Remarriage Act of 1856.
• Satya Prakash:
• A Gujarati newspaper edited by Karsondas Muliji, which aimed to spread ideas of social reform and modern education.
• The newspaper was known for its bold advocacy against caste discrimination and its promotion of women's education.
• Tattvabodhini Sabha:
• Founded by Debendranath Tagore in 1839 to rejuvenate the teachings of the Upanishads and spread the ideas of the Brahmo Samaj.
• The Sabha played a key role in the Bengal Renaissance by promoting intellectual and cultural awakening.
• Vedic Physics:
• Associated with Raja Rammohan Roy, the text explores the scientific basis of Hinduism and its philosophical teachings.
• It highlights the rational and progressive aspects of Vedic literature, aligning with Roy's vision of a modernized and enlightened Hindu society.

Important Points

• Vishnu Shastri Pundit: Instrumental in advocating for the rights of widows and promoting their remarriage.
• Karsondas Muliji: A progressive thinker who used the press as a tool for social reform.
• Debendranath Tagore: Played a significant role in the spiritual and intellectual awakening of Bengal.
• Raja Rammohan Roy: A visionary reformer who laid the foundation for modern Indian society through his work on social and religious reforms.

The correct answer is Shortughai.

Key Points

• Shortughai was a Harappan settlement located in present-day Afghanistan, near the Oxus (Amu Darya) river system.
• Archaeological excavations have revealed traces of canals, indicating a developed irrigation system.
• These canals were used to support agriculture in a semi-arid region, showing Harappan expertise in water management.
• Other sites like Banawali, Lothal, and Dholavira are known for town planning and water structures, but not for canal irrigation systems.

Additional Information

• Other Harappan Sites:
• Lothal: Lothal, located in Gujarat, India, is famous for its dockyard, indicating advanced maritime trade and urban planning. However, no evidence of canals has been found at Lothal.
• Shortughai: Shortughai, situated in present-day Afghanistan, was a Harappan trading outpost. It is known for its links to the Lapis Lazuli trade, and it is the only site where traces of canals have been found.
• Dholavira: Dholavira, located in Gujarat, India, is renowned for its sophisticated water reservoirs, step wells, and advanced water conservation systems, but no canals have been found.
• Characteristics of the Harappan Civilization:
• The Harappan Civilization flourished between 3300 BCE to 1300 BCE across the Indus Valley region.
• Known for its urban planning, Harappan cities featured grid layouts, drainage systems, and standardized weights and measures.
• It was an agrarian society with significant advancements in irrigation and water management techniques.
• Importance of Water Management:
• Water management played a key role in sustaining the agricultural economy of Harappan cities.
• Canals, reservoirs, and drainage systems ensured efficient distribution and utilization of water resources.
• Such systems highlight the technological and engineering capabilities of the Harappan people.

Important Points

• Excavations at Banawali: Excavations conducted by the Archaeological Survey of India have provided evidence of urban planning, pottery, and seals, revealing the advanced infrastructure of the Harappan Civilization.
• Saraswati River: Banawali's proximity to the ancient Saraswati River highlights the importance of natural water sources in the development of Harappan settlements.
• Technological Advancements: The Harappan Civilization demonstrated exceptional skills in engineering, urban planning, and water management, which were vital for their agricultural and trade-based economy.

The correct answer is 4 - 3 - 2 - 1.

Key Points

• Ibn Battuta (4)
• Ibn Battuta, a Moroccan scholar and explorer, visited India during the 14th century.
• His extensive travels in India occurred primarily between 1334 AD and 1341 AD, during the reign of Sultan Muhammad bin Tughluq of the Delhi Sultanate.
• Afanasii Nikitich Nikitin (3)
• Afanasii Nikitich Nikitin was a Russian merchant who undertook a journey to India in the 15th century.
• His travels took place approximately between 1468 AD and 1474 AD, reaching the Bahmani Sultanate.
• Antonio Monserrate (2)
• Antonio Monserrate, a Spanish Jesuit priest, visited India in the 16th century.
• He was part of a Jesuit mission to the Mughal Emperor Akbar and was in India from around 1580 AD to 1582 AD.
• Peter Mundy (1)
• Peter Mundy, an English merchant and traveller, visited India multiple times in the 17th century.
• His significant travels occurred in the 1630s (specifically 1630-1634) and later in the 1650s, during the Mughal Empire.

Additional Information

• Afanasii Nikitin:
• He travelled to India via Persia and the Arabian Sea.
• His travelogue "Voyage Beyond Three Seas" is one of the earliest foreign accounts of India.
• He described the trade, religious practices, and customs of India during the 15th century.
• Ibn Battuta:
• He travelled across several regions, including North Africa, the Middle East, and South Asia.
• His book "Rihla" documents his travels and provides valuable insights into the Delhi Sultanate.
• He highlighted the administrative system, economic conditions, and cultural practices of medieval India.
• Antonio Monserrate:
• He was closely associated with Akbar's court and wrote about the emperor's religious tolerance.
• His observations include details about the Mughal administration, military, and cultural practices.
• He emphasised Akbar's interest in interfaith dialogues and his efforts to promote religious harmony.
• Peter Mundy:
• He was a part of the English East India Company and visited several cities in India, including Surat and Agra.
• His travel notes describe the grandeur of the Mughal court and the economic conditions of the time.
• He provided an outsider's perspective on the Mughal Empire's architecture, trade, and social hierarchy.

Important Points

• Chronological Order:
• First, Ibn Battuta (14th century) visited India during the Tughlaq dynasty.
• Second, Afanasii Nikitin (15th century) travelled during the pre-Mughal period.
• Third, Antonio Monserrate (16th century) visited during Akbar's reign.
• Fourth, Peter Mundy (17th century) documented the Mughal Empire under Shah Jahan.
• Relevance: These travelers provide critical historical accounts of India's socio-cultural, political, and economic history.
• Significance: Their writings serve as primary sources for understanding India's past and its interactions with the wider world.

The correct answer is Establishment of a monetary system based on floating exchange rate.

Key Points

• The Bretton Woods System was established in July 1944 during the United Nations Monetary and Financial Conference held in Bretton Woods, New Hampshire, USA.
• The primary aim of the Bretton Woods System was to rebuild and stabilize the global economy after the devastation caused by the Second World War. Hence, statement 2 is correct.
• The Bretton Woods System led to the creation of two major financial institutions: the International Monetary Fund (IMF) and the International Bank for Reconstruction and Development (IBRD), which is a part of the World Bank Group. Hence, statements 1 and 3 are correct.
• The system was based on a fixed exchange rate regime, where currencies were pegged to the US dollar, and the US dollar was convertible to gold. It did not involve a floating exchange rate system. Hence, statement 4 is incorrect.
• The Bretton Woods System collapsed in the early 1970s when the US abandoned the gold standard, leading to the adoption of floating exchange rates by many countries.

Additional Information

• International Monetary Fund (IMF):
• Established in 1944 under the Bretton Woods Agreement, the IMF's purpose is to ensure global monetary cooperation, exchange rate stability, and balanced growth of international trade.
• The IMF provides financial assistance to countries facing balance-of-payments crises and monitors global economic trends.
• It currently has 190 member countries (as of October 2023).
• International Bank for Reconstruction and Development (IBRD):
• The IBRD is a part of the World Bank Group and was established to assist in the reconstruction of war-torn Europe after World War II.
• Today, it provides loans and financial assistance to middle-income and creditworthy low-income countries to reduce poverty and promote sustainable development.
• Fixed Exchange Rate System:
• Under the Bretton Woods System, countries were required to maintain their currency values within a fixed range of the US dollar, which was itself pegged to gold at $35 per ounce.
• This system provided stability in international trade and investment but limited countries' flexibility in addressing domestic economic issues.
• Collapse of the Bretton Woods System:
• The Bretton Woods System ended in 1971 when the US unilaterally terminated the convertibility of the US dollar to gold.
• This led to the adoption of the floating exchange rate system, where currency values are determined by market forces of demand and supply.
• Floating Exchange Rate System:
• It is a system where the value of a currency is determined by the foreign exchange market, based on supply and demand, rather than being fixed to the value of another currency or commodity like gold.
• This system provides countries with greater flexibility to address economic challenges but can lead to currency volatility.

The correct answer is a Chera king.

Key Points

• Cheran Senguttuvan's capital city was Vanchi, also known by its location as Karur, situated on the Amaravati River in modern-day Tamil Nadu, serving as a key political and trade hub for the early Chera kingdom.
• He was a famous early Chera king, known for military victories and his legendary Himalayan expedition detailed in the Tamil epic Silapathikaram.
• Senguttuvan is traditionally associated with the composition of the Tamil epic "Silappadikaram," attributed to his brother Ilango Adigal.
• He is known for establishing the concept of Kannaki worship and commemorating Kannaki through the installation of a temple.
• The Chera dynasty under Senguttuvan expanded its influence significantly, showcasing a combination of military prowess and cultural patronage.

Additional Information

• Chera Dynasty:
• The Chera dynasty ruled in the southern part of India, primarily in present-day Kerala and parts of Tamil Nadu.
• They were one of the three major dynasties in Tamilakam, alongside the Cholas and the Pandyas.
• The Cheras were famous for their trade relations with Rome, Arabia, and other regions.
• Silappadikaram:
• Silappadikaram is one of the five great epics of Tamil literature.
• The work was authored by Ilango Adigal, who is believed to be the brother of Senguttuvan.
• The epic narrates the story of Kannaki and Kovalan and is renowned for its portrayal of Tamil culture and societal norms.
• Kannaki Worship:
• Senguttuvan is credited with initiating Kannaki worship, symbolizing justice and moral integrity.
• Kannaki, the central character of Silappadikaram, is revered as a goddess in Tamil tradition.
• Other South Indian Dynasties:
• Pandya Dynasty: Known for their extensive trade and patronage of Tamil literature.
• Chola Dynasty: Famous for their maritime trade and grand temple architecture.
• These dynasties often interacted with the Cheras, shaping the socio-political landscape of ancient South India.

Important Points

• Trade and Economy:
• The Chera dynasty maintained prosperous trade relations with foreign regions, particularly the Roman Empire.
• They exported spices, ivory, and pearls, which were highly valued commodities in global trade.
• Literary Contributions:
• The Cheras played a significant role in the development of Tamil literature.
• Works such as Silappadikaram and other Sangam literature provide valuable insights into their governance and cultural ethos.
• Legacy of Senguttuvan:
• Senguttuvan is remembered as a warrior king who upheld justice and cultural traditions.
• His reign is considered a golden age in the history of the Chera dynasty.

The correct answer is Sandhyakara.

Key Points

• The Ramacharita is a unique example of dvyasrya-kavya, a literary work where two stories are narrated simultaneously.
• It was written by Sandhyakara, an ancient Indian poet and grammarian.
• The text is a Sanskrit epic poem that combines the narration of the Ramayana with grammatical and linguistic examples, serving as a didactic tool for teaching Sanskrit grammar.
• Sandhyakara composed the Ramacharita in such a way that it illustrates the rules of Panini's Ashtadhyayi (the foundational text of Sanskrit grammar), making it a masterpiece of both literature and grammar.
• The work demonstrates the simultaneous narration of the story of Rama (from the Ramayana) and the story of Ravana's conquest of Lanka, showcasing Sandhyakara's exceptional literary and grammatical skills.

Additional Information

• Dvyasrya-kavya:
• A literary form in Sanskrit where two different stories are narrated simultaneously in a single composition.
• It showcases the creativity and intellectual depth of the author, as it requires exceptional linguistic skills and precision.
• Examples like the Ramacharita demonstrate the blending of narrative art and linguistic education.
• Bhatti:
• Bhatti is renowned for his work Bhattikavya or Ramacharita.
• He is believed to have lived around the 7th century CE during the reign of King Shridharasena.
• His contributions are significant in demonstrating the application of Sanskrit grammar and linguistics.
• Panini's Ashtadhyayi:
• A foundational text of Sanskrit grammar written by Panini around the 5th century BCE.
• The Ashtadhyayi consists of eight chapters and lays down the grammatical rules for Sanskrit.
• Bhatti's Ramacharita effectively uses these rules as a teaching tool.
• Other Notable Works of the Era:
• Subandhu: Known for the prose romance Vasavadatta, a different literary genre from Ramacharita.
• Sandhyakara: Known for his work Ramacharitam, but it is not an example of dvyasrya-kavya.
• Kamban: A Tamil poet renowned for his Kamba Ramayanam, a Tamil version of the Ramayana, distinct from Bhatti's work.

Important Points

• The Ramacharita by Bhatti is unique in its dual purpose: it narrates the epic story of Rama while serving as a pedagogical text for Sanskrit grammar.
• This work is a testament to the intellectual brilliance of classical Indian scholars who blended literature, language, and education.
• While Bhatti's Ramacharita is an example of dvyasrya-kavya, other authors mentioned in the options, such as Subandhu and Kamban, contributed to Indian literature in distinct genres.

The correct answer is Pitt’s India Act of 1784.

Key Points

• Pitt’s India Act of 1784 established a dual system of control by creating the Board of Control to oversee and guide the East India Company’s Court of Directors in matters related to civil, military, and revenue administration in India.
• The Act gave the British government direct control over the administrative and political matters of the East India Company, establishing a dual system of governance.
• The Board of Control consisted of six members, including two cabinet ministers and four members appointed by the Crown, to ensure the British government’s oversight over the company’s operations.
• The Court of Directors retained control over commercial affairs, while the Board of Control supervised political and military activities, thus separating governance and commerce.
• The Act marked a shift in the British administration of India, ensuring that the Crown had a direct and greater role in Indian affairs compared to the earlier Regulating Act of 1773.

Additional Information

• Regulating Act of 1773:
• This was the first attempt by the British Parliament to regulate the East India Company’s administration in India.
• It established the office of the Governor-General of Bengal and created an executive council of four members to assist the Governor-General.
• It marked the beginning of parliamentary control over the East India Company.
• However, it did not establish the Board of Control. Hence, this option is incorrect.
• Charter Act of 1793:
• This Act renewed the charter of the East India Company for another 20 years.
• It allowed the company to continue its trade monopoly in India except for trade with China and the tea trade.
• It did not establish the Board of Control. Hence, this option is incorrect.
• Charter Act of 1813:
• This Act ended the commercial monopoly of the East India Company, allowing other British merchants to trade in India, except for tea and opium.
• It also allocated funds for the promotion of education in India and missionary activities.
• It did not establish the Board of Control. Hence, this option is incorrect.

Important Points

• The Pitt’s India Act of 1784 was named after the then British Prime Minister, William Pitt the Younger.
• This Act aimed to address the shortcomings of the Regulating Act of 1773, which had failed to provide effective governance and supervision over the East India Company’s administration.
• The Act introduced the concept of a dual government, dividing authority between the East India Company and the British Crown.
• It laid the foundation for the British government’s increasing control over India, eventually leading to the Government of India Act of 1858, which abolished the East India Company and brought India directly under the British Crown.

The correct answer is Guru Gobind Singh.

Key Points

• Guru Gobind Singh, the tenth Sikh Guru, laid the foundation of the Khalsa Panth on 13 April 1699, on the day of Baisakhi, in Anandpur Sahib, Punjab.
• The creation of the Khalsa was a pivotal moment in Sikh history, aimed at formalizing the Sikh community into a brotherhood of saint-soldiers bound by a code of conduct and discipline.
• Guru Gobind Singh initiated the first five Khalsa members, known as the Panj Pyare (the Five Beloved Ones), who were then baptized with Amrit (sweetened water stirred with a double-edged sword).
• The Khalsa symbolized a commitment to justice, equality, and protection of the oppressed, embodying the principles of both spiritual devotion and martial valor.
• After the formation of the Khalsa, Guru Gobind Singh introduced the five K’s: Kesh (uncut hair), Kangha (wooden comb), Kara (iron bracelet), Kachera (cotton undergarments), and Kirpan (sword), which became mandatory for all initiated Sikhs to signify their faith and identity.

Additional Information

• Guru Nanak:
• Guru Nanak was the founder of Sikhism and the first Sikh Guru, born in 1469.
• He laid the foundation of the Sikh faith, emphasizing equality, community service, devotion to one God, and rejection of caste discrimination.
• Guru Nanak’s teachings are preserved in the holy scripture, the Guru Granth Sahib.
• Guru Arjan:
• Guru Arjan was the fifth Sikh Guru and the first Sikh martyr.
• He compiled the Adi Granth, which later became the Guru Granth Sahib, the holy scripture of Sikhism.
• He also supervised the construction of the Harmandir Sahib (Golden Temple) in Amritsar.
• Guru Hargobind:
• Guru Hargobind was the sixth Sikh Guru, known for introducing the concept of Miri (temporal power) and Piri (spiritual authority).
• He was the first Guru to organize Sikhs into a military community to defend against oppression.
• Guru Gobind Singh:
• Born in 1666, he became the tenth Guru at the age of 9 after the martyrdom of his father, Guru Tegh Bahadur.
• He contributed significantly to Sikh literature and wrote the Dasam Granth.
• Guru Gobind Singh also declared the Guru Granth Sahib as the eternal Guru of the Sikhs.

Important Points

• The Khalsa Panth was established to uphold the values of courage, righteousness, and selflessness.
• The term “Khalsa” means pure, and its members were expected to lead a disciplined, spiritual, and moral life.
• Guru Gobind Singh’s leadership during the formation of the Khalsa was instrumental in uniting the Sikh community against tyranny and injustice.
• The significance of the Five K’s lies in their role as symbols of Sikh identity and their reminder of the values and responsibilities of a Khalsa.

The correct answer is Second Five Year Plan.

Key Points

• The Second Five Year Plan (1956-1961) of India is also known as the Mahalanobis Plan, named after the Indian statistician Prof. P.C. Mahalanobis.
• It was based on the Mahalanobis Model, which emphasized the development of the industrial sector, particularly heavy industries, as a means to achieve economic self-reliance.
• The plan focused on a socialist pattern of society, aiming at rapid industrialization and economic growth while reducing dependency on imports.
• The allocation of resources was heavily inclined towards the industrial sector (especially steel, cement, and heavy machinery), with the goal of building the infrastructure necessary for future economic growth.
• The Mahalanobis model also prioritized the public sector and limited foreign capital to ensure that key industries remained under state control, aligning with the goal of self-sufficiency.

Additional Information

• P.C. Mahalanobis:
• Prof. Prasanta Chandra Mahalanobis was a renowned Indian statistician and is widely regarded as the father of modern statistics in India.
• He developed the Mahalanobis distance, a statistical measure, and played a significant role in formulating India's economic planning.
• His model emphasized the role of capital goods industries in driving economic growth, which became the cornerstone of the Second Five Year Plan.
• Key Characteristics of the Second Five Year Plan:
• It focused on industrialization, with a special emphasis on basic and heavy industries.
• The plan aimed to reduce economic inequality and achieve a socialist pattern of society.
• It proposed the establishment of state-owned enterprises in critical industries like steel, mining, and heavy machinery.
• A significant amount of the resources was allocated to the development of the public sector.
• Comparison with Other Five Year Plans:
• The First Five Year Plan (1951-1956) focused on agriculture and irrigation to tackle the challenges of food scarcity and boost agricultural production.
• The Third Five Year Plan (1961-1966) emphasized self-reliance and aimed to make India an independent economic entity, with a focus on agriculture and industry.
• The Sixth Five Year Plan (1980-1985) focused on poverty alleviation and achieving balanced regional development.
• Impact of the Second Five Year Plan:
• It laid the foundation for India's heavy industrial sector, including the establishment of steel plants in Bhilai, Rourkela, and Durgapur.
• The plan contributed to the growth of infrastructure, including power generation and transportation.
• However, the focus on industrialization led to neglect of agriculture, causing food shortages and economic challenges in subsequent years.

Important Points

• Economic Framework:
• The Second Five Year Plan was inspired by the Soviet model, which emphasized centralized planning and industrialization.
• It introduced the concept of planned economic development, with the state playing a significant role in resource allocation and industrial development.
• Criticism of the Plan:
• The focus on industrialization came at the cost of agricultural investment, leading to food shortages.
• The plan's reliance on state-led development was criticized for inefficiency and lack of competition.
• Legacy:
• The plan had a lasting impact on India's economic structure by establishing a strong industrial base.
• It also shaped India's economic policies, emphasizing the importance of self-reliance and public sector dominance in critical industries.

The correct answer is 1966-1969.

Key Points

• Annual Plans (1966-1969): The period of 1966-1969 marked the implementation of Annual Plans in India due to economic instability and the inability to formulate a Five-Year Plan during this time.
• The government introduced Annual Plans as a temporary measure after the Third Five-Year Plan (1961-1966) failed to achieve its targets due to droughts, wars, and economic challenges.
• Key Features: During the Annual Plan period, the focus was on stabilizing the economy, addressing food shortages, and improving agriculture, as India faced economic crises due to the Indo-Pak wars and successive droughts.
• Flexibility: The Annual Plans were designed to be flexible, allowing the government to adapt to the immediate economic challenges rather than pursuing long-term goals.
• The Fourth Five-Year Plan began in 1969, marking the end of the Annual Plan phase.

Additional Information

• Five-Year Plans in India:
• The Planning Commission of India was established in 1950 to formulate and oversee the implementation of Five-Year Plans aimed at economic development.
• The First Five-Year Plan (1951-1956) focused on agriculture and irrigation to address food shortages.
• Subsequent plans emphasized industrial development, poverty alleviation, and social welfare.
• Challenges Faced During 1966-1969:
• The Third Five-Year Plan (1961-1966) faced significant setbacks due to droughts, the Indo-China War (1962), and the Indo-Pak War (1965), leading to economic instability.
• India faced severe food shortages, requiring immediate measures such as importing food grains under the PL-480 scheme from the United States.
• The economic crisis necessitated the adoption of Annual Plans to address short-term objectives.
• Significance of Annual Plans:
• Annual Plans allowed the government to focus on immediate priorities such as agriculture, food production, and economic stabilization.
• They provided flexibility in planning and resource allocation, enabling the government to address urgent issues like droughts and wars.
• This period laid the foundation for the Green Revolution, which significantly increased agricultural productivity in subsequent years.
• Transition to the Fourth Five-Year Plan:
• By 1969, the Indian economy had stabilized, and the government resumed long-term planning with the launch of the Fourth Five-Year Plan (1969-1974).
• This plan focused on growth with stability, modernization, and self-reliance.
• The Planning Commission continued to play a pivotal role in India's economic planning until its dissolution in 2014, when it was replaced by the NITI Aayog.

Important Points

• Historical Context:
• India's economy during the 1960s faced multiple challenges, including natural disasters, wars, and economic stagnation.
• The Annual Plans were introduced as a pragmatic solution to address immediate needs while preparing for long-term planning.
• The experience gained during this period contributed to the formulation of effective policies in later years.
• Legacy of Annual Plans:
• The Annual Plans demonstrated the importance of flexibility in economic planning, particularly during times of crisis.
• They highlighted the need for prioritizing agriculture and food security in India's development strategy.
• Lessons learned during this period influenced the implementation of the Green Revolution and subsequent Five-Year Plans.

The correct answer is Neither 1 nor 2.

Key Points

• Statement 1: The first BRICS Summit was held in Brazil.
  

This statement is incorrect. The first BRICS Summit was held in Yekaterinburg, Russia, on June 16, 2009. Initially, it was a meeting of the BRIC countries (Brazil, Russia, India, and China), and South Africa joined the group in 2010, making it BRICS.

• Statement 2: BRICS Summits were held in New Delhi on three occasions.
  

This statement is also incorrect. BRICS Summits have been held in New Delhi only twice, in 2012 (4th Summit) and 2016 (8th Summit). Thus, the claim of three occasions is factually incorrect.

Additional Information

• BRICS Overview:
• BRICS stands for Brazil, Russia, India, China, and South Africa.
• The grouping aims to promote economic growth, sustainable development, and multilateral cooperation among its members.
• South Africa joined the group in 2010, transforming BRIC into BRICS.
• BRICS Summits Timeline:
• 2009: The 1st BRICS Summit was held in Yekaterinburg, Russia.
• 2012: The 4th BRICS Summit was held in New Delhi, India.
• 2016: The 8th BRICS Summit was held in Goa, India.
• India has hosted BRICS Summits twice, not three times.
• Key Objectives of BRICS:
• To reform global financial institutions like the International Monetary Fund (IMF) and the World Bank.
• To enhance cooperation in areas like trade, health, environment, and technology.
• To address challenges such as climate change, terrorism, and global economic instability.
• New Development Bank (NDB):
• The BRICS countries established the NDB in 2014.
• The NDB aims to provide funding for infrastructure and sustainable development projects in BRICS and other developing nations.

Important Points

• Significance of BRICS:
• The BRICS countries together account for about 41% of the global population, covering a large part of the world's emerging economies.
• They contribute approximately 24% of the global GDP.
• BRICS Summits serve as a platform for member countries to collaborate on regional and global issues.
• BRICS Chairmanship:
• The chairmanship of BRICS rotates annually among its members in accordance with the principle of alphabetical order.
• India chaired the BRICS Summit most recently in 2021.

The correct answer is 2 - 3 - 1.

Key Points

• Advent of Inter-Continental Ballistic Missiles (ICBMs):
• The development of Inter-Continental Ballistic Missiles (ICBMs) began during the Cold War era.
• The first operational ICBM was the Soviet Union's R-7 Semyorka, which was successfully tested on August 21, 1957.
• This event marked a significant milestone in military technology and global geopolitics.
• Hence, this event occurred first.
• Launch of First Communication Satellite:
• The first communication satellite, Telstar 1, was launched by the United States on July 10, 1962.
• It enabled the transmission of live television signals, telephone calls, and other data across the Atlantic Ocean.
• This was a revolutionary advancement in global communication technology.
• Hence, this event happened after the advent of ICBMs.
• Introduction of the World Wide Web (WWW):
• The World Wide Web was invented by Tim Berners-Lee in 1989 and became publicly available in 1991.
• It revolutionized how information was shared and accessed globally, forming the foundation of the modern internet.
• The introduction of WWW represents a more recent technological advancement compared to the other two events.
• Hence, this event occurred last in the sequence.

Additional Information

• Inter-Continental Ballistic Missiles (ICBMs):
• Definition: ICBMs are long-range missiles capable of delivering nuclear warheads across continents, with a range exceeding 5,500 kilometers.
• Key Nations: The United States, Russia (formerly USSR), China, and other major powers have developed and deployed ICBMs.
• Significance: ICBMs played a crucial role in the Cold War arms race and continue to influence global military strategy.
• Communication Satellites:
• Telstar 1: This satellite facilitated the first transatlantic television broadcast and symbolized the beginning of satellite communication technology.
• Modern Usage: Communication satellites are now used for television, radio broadcasting, internet, and military communication worldwide.
• Impact: They have significantly enhanced global connectivity and information exchange.
• World Wide Web (WWW):
• Development: Created by Tim Berners-Lee at CERN to enable easy access and sharing of information over the internet.
• Features: The WWW introduced the use of URLs, HTML, and HTTP to structure and access online resources.
• Modern Impact: It is the backbone of the internet, supporting e-commerce, social media, education, and countless other applications.

Important Points

• Timeline Summary:
• 1957: Advent of ICBMs with the R-7 Semyorka.
• 1962: Launch of the first communication satellite, Telstar 1.
• 1991: Public availability of the World Wide Web.
• Technological Significance:
• Each of these events represents a milestone in human history, showcasing advancements in military, communication, and information technology.
• They have profoundly shaped modern society and geopolitics.

The correct answer is 2 only.

Key Points

• Right to Work: The Right to Work is not included as a Fundamental Right under the Constitution of India. It is part of the Directive Principles of State Policy under Article 41, which directs the state to make provisions for securing the right to work, education, and public assistance in cases of unemployment, old age, sickness, and disability. Hence, Statement 1 is incorrect.
• Right to Privacy: The Right to Privacy was recognized as a Fundamental Right under Article 21 (Right to Life and Personal Liberty) by the Supreme Court in its landmark judgment in the Puttaswamy case (2017). This ensures the protection of personal data and privacy from interference by the state or third parties. Hence, Statement 2 is correct.
• Right to Free and Compulsory Education: The Right to Education Act (2009) makes education a Fundamental Right for children aged 6 to 14 years under Article 21A of the Constitution. However, the age bracket mentioned in the question (6 to 18 years) is incorrect, as the provision applies only to children aged 6 to 14 years. Hence, Statement 3 is incorrect.
• Fundamental Rights in India: Fundamental Rights are enshrined in Part III of the Constitution and include rights such as equality, freedom, cultural and educational rights, and protection against exploitation.
• Directive Principles: Rights such as the Right to Work are part of Directive Principles, which are guidelines for the state but are not enforceable in a court of law.

Additional Information

• Article 21: The Right to Life and Personal Liberty is guaranteed under Article 21, which includes the right to privacy as per the Supreme Court's judgment in Justice K.S. Puttaswamy (Retd.) v. Union of India (2017). This judgment expanded the scope of Article 21 to include personal privacy as an essential aspect of liberty.
• Article 21A: The Right to Free and Compulsory Education was added by the 86th Constitutional Amendment Act (2002). It mandates free and compulsory education for children aged 6 to 14 years as a Fundamental Right.
• Directive Principles of State Policy: Articles like 39, 41, and 43 include provisions for the welfare of citizens, including the right to work, education, and public assistance. These are not enforceable but guide the state in policymaking.
• Puttaswamy Judgment: The landmark ruling in 2017 affirmed that privacy is a Fundamental Right under Article 21. This judgment had significant implications for data protection laws in India and the regulation of surveillance and information access by the state.
• Right to Work Globally: Many countries recognize the Right to Work as part of their constitutional framework or social policies, but in India, it remains under the Directive Principles and not as a Fundamental Right.

Important Points

• Fundamental Rights: These are enforceable in a court of law and are aimed at protecting individual freedom and ensuring equality. Examples include Article 14 (Right to Equality), Article 19 (Freedom of Speech), and Article 21 (Right to Life).
• Directive Principles: These are non-enforceable guidelines mentioned in Part IV of the Constitution, aiming to create a welfare state. They include provisions like the Right to Work, equal pay for equal work, and protection of the environment.
• Supreme Court's Role: The judiciary plays a crucial role in interpreting Fundamental Rights and expanding their scope based on landmark judgments like Puttaswamy (2017) and Maneka Gandhi (1978).

The correct answer is 2.

Key Points

• Statement 1: The flag of the European Union (EU) does not have a circle of gold stars on a white background. Instead, it consists of a circle of 12 gold stars on a blue background, symbolizing unity, solidarity, and harmony among the peoples of Europe. Hence, this statement is incorrect.
• Statement 2: The flag of the United Nations (UN) features a world map surrounded by two pairs of olive branches. These olive branches symbolize peace, and the map shows all the countries of the world, emphasizing the organization's global reach. Hence, this statement is correct.
• Statement 3: The flag of ASEAN (Association of Southeast Asian Nations) indeed carries four colors: blue, red, white, and yellow. These colors represent the main hues of the flags of ASEAN member countries. The emblem includes stalks of paddy, symbolizing prosperity and solidarity among ASEAN nations. Hence, this statement is correct.

Additional Information

• European Union Flag:
• The flag was adopted in 1986 and consists of 12 stars, which symbolize perfection and completeness rather than the number of member states.
• The blue background represents the European identity and the unity of its people.
• The stars are arranged in a circle, symbolizing solidarity and harmony.
• United Nations Flag:
• The flag was adopted on October 20, 1947.
• The olive branches are a universally recognized symbol of peace.
• The map on the flag represents a projection of the globe centered on the North Pole, emphasizing the UN's mission to address global issues.
• ASEAN Flag:
• The flag was first adopted in 1997.
• The colors blue, red, white, and yellow are often seen in the national flags of ASEAN member states, symbolizing unity in diversity.
• The ten stalks of paddy represent the ten member countries and their shared goal of economic growth and regional stability.
• Importance of Flags in International Organizations:
• Flags serve as visual representations of an organization's goals, values, and identity.
• They are used in official events, summits, and communications to foster unity among member states.

Important Points

• European Union:
• Founded in 1993 under the Maastricht Treaty.
• Currently has 27 member states.
• Aims to promote economic, political, and social cooperation in Europe.
• United Nations:
• Established on October 24, 1945, after World War II.
• Comprises 193 member states.
• Focuses on maintaining international peace and security, promoting sustainable development, and protecting human rights.
• ASEAN:
• Formed on August 8, 1967, in Bangkok, Thailand.
• Includes 10 Southeast Asian nations.
• Focuses on economic growth, social progress, and cultural development in the region.

The correct answer is Abhijit Sen Committee.

Key Points

• The Balwant Rai Mehta Committee was formed in 1957 to study the working of Community Development Programme (1952) and National Extension Service (1953). It recommended the establishment of democratic decentralization and the introduction of Panchayati Raj institutions. Hence, it is associated with decentralization.
• The Ashok Mehta Committee, constituted in 1977, suggested a two-tier Panchayati Raj system and the inclusion of political parties for better governance. It emphasized the need for decentralization through Panchayati Raj institutions. Hence, it is associated with decentralization.
• The L.M. Singhvi Committee was formed in 1986 to recommend measures to strengthen Panchayati Raj institutions. It proposed the constitutional recognition of Panchayati Raj institutions, which later led to the 73rd Constitutional Amendment Act in 1992. Hence, it is associated with decentralization.
• The Abhijit Sen Committee, on the other hand, focused on agricultural issues, including the Minimum Support Price (MSP) and food security. It was not related to the decentralization of Panchayati Raj institutions in India. Hence, this is the correct answer.

Additional Information

• Balwant Rai Mehta Committee:
• It introduced the concept of a three-tier Panchayati Raj system, comprising the Gram Panchayat, Panchayat Samiti, and Zila Parishad.
• It emphasized the role of elected bodies for local governance and decision-making.
• The committee played a significant role in laying the foundation for decentralized governance in India.
• Ashok Mehta Committee:
• Recommended the two-tier structure for Panchayati Raj, consisting of Zila Parishad and Mandal Panchayat.
• Suggested that Panchayati Raj institutions should have more financial autonomy.
• Advocated for the inclusion of political parties in Panchayati Raj elections.
• L.M. Singhvi Committee:
• Proposed constitutional status for Panchayati Raj institutions, which led to the enactment of the 73rd Constitutional Amendment Act.
• Highlighted the importance of decentralization for effective governance.
• Recommended regular elections for Panchayati Raj institutions and the establishment of the State Finance Commission.
• Abhijit Sen Committee:
• Focused primarily on issues related to agriculture, food security, and minimum support price (MSP).
• Its recommendations aimed at improving agricultural productivity and ensuring food security for India.
• It had no direct connection with Panchayati Raj institutions or decentralization.

Important Points

• 73rd Constitutional Amendment Act:
• It was enacted in 1992 and came into force in 1993.
• Provided constitutional recognition to Panchayati Raj institutions.
• Mandated the formation of Gram Sabha, regular elections, and reservation for Scheduled Castes, Scheduled Tribes, and women.
• Introduced the concept of State Election Commission and State Finance Commission to strengthen local governance.
• Decentralization in India:
• Decentralization aims to transfer power from the central and state governments to local self-governments like Panchayats and Municipalities.
• It facilitates participatory governance and ensures accountability at the grassroots level.
• Strengthened through various committees like Balwant Rai Mehta, Ashok Mehta, and L.M. Singhvi.
• Role of Panchayati Raj Institutions:
• They function as local self-governments in rural areas.
• They are responsible for implementing rural development programs and ensuring public welfare.
• Promote participatory democracy and decentralized decision-making.

CONCEPT:

Reaction of Carbon Dioxide with Lime Water

• When carbon dioxide gas is passed through lime water (a solution of calcium hydroxide), a reaction occurs that forms calcium carbonate (CaCO₃) and water (H₂O).
• Calcium carbonate is insoluble in water and forms a white precipitate, giving the lime water a milky appearance.
• The reaction is represented as:

Ca(OH)₂ + CO₂ → CaCO₃ + H₂O

EXPLANATION:

• The reaction involves the following steps:
• Lime water contains calcium hydroxide (Ca(OH)₂).
• When carbon dioxide gas (CO₂) is bubbled through lime water, CO₂ reacts with Ca(OH)₂ to form insoluble calcium carbonate (CaCO₃) and water.
• The formation of calcium carbonate as a precipitate is what makes lime water turn milky.
• If excess carbon dioxide is passed, calcium carbonate dissolves in water to form calcium bicarbonate (Ca(HCO₃)₂), making the solution clear again.

Ca(OH)₂ + CO₂ → CaCO₃ + H₂O

Therefore, the correct answer is Option 2: Ca(OH)₂ + CO₂ → CaCO₃ + H₂O.

CONCEPT:

Chemical Properties of Salts and Related Compounds

• Water of Crystallization: It is the fixed number of water molecules chemically bonded to a salt in its crystalline form (e.g., CuSO₄·5H₂O).
• Plaster of Paris: Its chemical formula is CaSO₄·0.5H₂O, not CaSO₄·2H₂O, as it contains half a water molecule per formula unit.
• Washing Soda (Na₂CO₃·10H₂O): It is commonly used to remove permanent hardness in water by reacting with calcium and magnesium ions.
• Venus' Atmosphere: The atmosphere of Venus is primarily composed of carbon dioxide (CO₂), with thick clouds of sulfuric acid (H₂SO₄).

EXPLANATION:

• The statement is correct as water of crystallization is indeed the fixed number of water molecules chemically bonded to a salt in its crystalline state.
• The statement is incorrect because the molecular formula of Plaster of Paris is CaSO₄·0.5H₂O, not CaSO₄·2H₂O.
• The statement is correct as washing soda is used to remove permanent hardness of water by precipitating calcium and magnesium ions as insoluble carbonates.
• The statement is correct as Venus' atmosphere indeed contains thick clouds of sulfuric acid along with carbon dioxide.

Therefore, the correct answer is Option 2, as it is NOT correct.

CONCEPT:

Antacids

• Antacids are substances used to neutralize excess stomach acid, providing relief from indigestion, heartburn, and acidity.
• They are typically composed of weak bases such as magnesium hydroxide, aluminum hydroxide, calcium carbonate, or sodium bicarbonate.
• These substances work by reacting with hydrochloric acid (HCl) in the stomach to produce salt and water, reducing acidity and alleviating symptoms of indigestion.

EXPLANATION:

• Indigestion occurs when there is excessive production of stomach acid, leading to discomfort or a burning sensation.
• The most effective type of medicine to treat indigestion is an antacid, as it directly neutralizes the stomach acid.
• Other types of medicines listed, such as:
• Analgesics: Relieve pain, not relevant to indigestion.
• Antiseptics: Prevent infection by killing germs, not used for indigestion.
• Antibiotics: Treat bacterial infections, not related to stomach acid.

​Therefore, the type of medicine used for treating indigestion is an antacid.

CONCEPT:

Chemical Composition of Cement

• Cement is primarily made up of four major compounds, which are identified based on their chemical composition.
• These compounds are:
• 2CaO.SiO₂ (Dicalcium Silicate, C₂S) - Contributes to the strength of cement over time.
• 3CaO.SiO₂ (Tricalcium Silicate, C₃S) - Responsible for early strength development.
• 3CaO.Al₂O₃ (Tricalcium Aluminate, C₃A) - Reacts with water rapidly and generates heat.
• 4CaO.Al₂Fe₂O₁₀ (Tetracalcium Aluminoferrite, C₄AF) - Contributes to strength but also helps in controlling the heat generated during hydration.
• All these compounds are essential for the properties and performance of cement.

EXPLANATION:

• In the given options, one of the compounds listed is 4CaO.SiO₂.
• 4CaO.SiO₂ is not a standard compound found in cement.
• The standard silicate compounds in cement are 2CaO.SiO₂ (C₂S) and 3CaO.SiO₂ (C₃S).
• Therefore, 4CaO.SiO₂ is not present in cement.

CONCEPT:

Chemical Change vs Physical Change

• A chemical change involves the formation of new substances with different properties through a chemical reaction. Examples include burning, rusting, and reactions between chemicals.
• A physical change does not produce new substances; it only changes the physical state or appearance of the substance. Examples include melting, boiling, and freezing.

EXPLANATION:

1. Burning of coal is a chemical change because it produces new substances like carbon dioxide and ash.
2. Rusting of metal is a chemical change because it involves the formation of new substances such as iron oxide.
3. Melting of ice is a physical change because it only changes the state of water from solid to liquid, without forming new substances.
4. Reaction of acid with base is a chemical change because it forms new substances like water and salt.

• Among the options, melting of ice is NOT a chemical change.

Therefore, the correct answer is Melting of ice.

CONCEPT:

Interconversion of States of Matter and Types of Changes

• Physical Change: A change in the state or appearance of a substance without altering its chemical composition. Example: Melting of ice.
• Chemical Change: A change that leads to the formation of a new substance with a different chemical composition. Example: Rusting of iron.
• The interconversion of states of matter (solid, liquid, gas) is a physical change because the chemical composition of the substance remains the same.

EXPLANATION:

• "The interconversion of states of matter is a physical change" – This is correct because the chemical composition does not change during state changes (e.g., melting, boiling).
• "During burning of a candle, both chemical and physical changes take place" – This is correct because melting of wax is a physical change, while combustion of wax is a chemical change.
• "During a physical change, the chemical composition of molecules changes" – This is NOT correct because, by definition, a physical change does not alter the chemical composition of a substance.
• "Rusting of iron is a chemical change" – This is correct because rusting involves the chemical reaction of iron with oxygen and water to form iron oxide.

Therefore, the correct answer is "During a physical change, the chemical composition of molecules changes".

CONCEPT:

Homogeneous and Heterogeneous Mixtures

• A homogeneous mixture is a mixture in which the components are uniformly distributed, and there is no visible boundary of separation between them. Examples include solutions like salt water or sugar water.
• A heterogeneous mixture is a mixture in which the components are not uniformly distributed, and the different components can often be seen as distinct phases. Examples include sandy water or oil and water.

EXPLANATION:

• Sulphur in carbon disulphide: This is a homogeneous mixture because sulphur dissolves completely in carbon disulphide, forming a single phase.
• Mixture of sugar and salt crystals: This is a heterogeneous mixture because the sugar and salt crystals remain as distinct solids and do not form a single uniform phase.
• Sandy water: This is a heterogeneous mixture because sand does not dissolve in water and forms a separate layer or particles in the water.
• Sulphur in water: This is a heterogeneous mixture because sulphur does not dissolve in water and appears as a separate solid phase.
• Among the options, only Option 1 (Sulphur in carbon disulphide) is a homogeneous mixture, while the rest are heterogeneous mixtures.

Therefore, the correct answer is Sulphur in carbon disulphide, as it is NOT a heterogeneous mixture.

EXPLANATION:

Atomicity

• Atomicity is defined as the number of atoms present in a single molecule of an element or compound.
• For elements:
• Phosphorus exists as P₄, so its atomicity is 4.
• Nitrogen exists as N₂, so its atomicity is 2.
• Neon is a noble gas and exists as monoatomic (Ne), so its atomicity is 1.
• Sulphur exists as S₈, so its atomicity is 8.
• Matching List I (Element) with List II (Atomicity):
• A. Phosphorus → Atomicity = 4 (Option 4)
• B. Nitrogen → Atomicity = 2 (Option 1)
• C. Neon → Atomicity = 1 (Option 2)
• D. Sulphur → Atomicity = 8 (Option 3)

Therefore, the correct answer is Option 2: A - 4, B - 1, C - 2, D - 3.

CONCEPT:

Redox Reaction and Reducing Agent

• In a redox reaction, one compound is oxidized (loses electrons) and another is reduced (gains electrons).
• The reducing agent is the compound that donates electrons (is oxidized) during the reaction.

EXPLANATION:

• In the given reaction:

N₂H₄ + 2H₂O₂ → N₂ + 4H₂O

• Hydrazine (N₂H₄) is oxidized to nitrogen gas (N₂). This means it loses electrons.
• Hydrogen peroxide (H₂O₂) is reduced to water (H₂O). This means it gains electrons.
• Since N₂H₄ is oxidized, it is the reducing agent, as it donates electrons to H₂O₂.

Therefore, the compound acting as the reducing agent is N₂H₄.

CONCEPT:

Purest Source of Water

• Water sources such as rivers, seas, wells, and rain have varying levels of purity based on their exposure to contaminants and natural filtration.
• The purity of water is determined by the absence of dissolved salts, impurities, and pollutants.
• Rainwater is considered the purest form of natural water because:
• It is formed by the process of evaporation and condensation, where water vapor rises from the earth's surface and condenses to form droplets.
• This process eliminates most impurities, resulting in water that is free from dissolved salts and major contaminants.

EXPLANATION:

• Each water source has distinct characteristics:
• River Water: Contains dissolved salts, organic matter, and pollutants from the surrounding environment.
• Sea Water: Highly saline due to dissolved salts, making it unsuitable for direct consumption.
• Well Water: May contain dissolved minerals and contaminants depending on the soil and rock layers it passes through.
• Rain Water: It is naturally distilled through evaporation and condensation, making it the purest form of water.
• Hence, rainwater is considered the purest source of water.

Therefore, the correct answer is Rain water.

CONCEPT:

Temporary Hardness of Water

• Temporary hardness of water is caused by the presence of dissolved bicarbonates of calcium and magnesium.
• These bicarbonates form when water interacts with carbon dioxide and minerals in the soil, resulting in soluble compounds.
• Temporary hardness can be removed by boiling the water, which decomposes the bicarbonates into insoluble carbonates.

EXPLANATION:

• Bicarbonates of magnesium are responsible for temporary hardness because:
• Bicarbonates dissolve in water and cause hardness.
• Boiling the water decomposes bicarbonates into insoluble magnesium carbonate, removing the hardness.
• Other salts (e.g., sulphates and chlorides) cause permanent hardness, which cannot be removed by boiling.

Therefore, the correct answer is Bicarbonates of magnesium.

CONCEPT:

Types of Chemical Reactions

• Combination Reaction: Two or more substances combine to form a single product.
• Decomposition Reaction: A single compound breaks down into two or more simpler substances.
• Single Displacement Reaction: One element replaces another element in a compound.
• Double Displacement Reaction: Exchange of ions occurs between two compounds forming new compounds.

EXPLANATION:

• A. CaO(s) + H₂O(l) → Ca(OH)₂(aq)
• This is a Combination Reaction because two reactants (CaO and H₂O) combine to form a single product (Ca(OH)₂).
• Type: Combination (3)
• B. CaCO₃(s) → CaO(s) + CO₂(g)
• This is a Decomposition Reaction because a single compound (CaCO₃) breaks down into two simpler substances (CaO and CO₂).
• Type: Decomposition (4)
• C. Pb(s) + CuCl₂(aq) → PbCl₂(aq) + Cu(s)
• This is a Single Displacement Reaction because Pb replaces Cu in CuCl₂ to form PbCl₂ and Cu.
• Type: Single Displacement (1)
• D. Na₂SO₄(aq) + BaCl₂(aq) → BaSO₄(s) + 2NaCl(aq)
• This is a Double Displacement Reaction because ions are exchanged between Na₂SO₄ and BaCl₂ to form BaSO₄ and NaCl.
• Type: Double Displacement (2)

CONCEPT:

Endothermic and Exothermic Reactions

• An endothermic reaction is a chemical reaction that absorbs heat from its surroundings. The energy required to break the bonds of the reactants is greater than the energy released when the products are formed.
• An exothermic reaction, in contrast, releases heat to the surroundings as the energy released during the bond formation of products is greater than the energy required to break the bonds of the reactants.
• In endothermic reactions, the change in enthalpy (ΔH) is positive, while in exothermic reactions, ΔH is negative.

EXPLANATION:

• CH₄(g) + 2O₂(g) → CO₂(g) + 2H₂O(g)
• This is a combustion reaction of methane. Combustion reactions are typically exothermic as they release a large amount of heat.
• C₆H₁₂O₆(aq) + 6O₂(g) → 6CO₂(g) + 6H₂O(l)
• This is the process of cellular respiration, which is an exothermic reaction as energy is released in the form of ATP.
• N₂(g) + 3H₂(g) → 2NH₃(g)
• This is the Haber process for ammonia synthesis, which is exothermic as heat is released during the reaction.
• 2Pb(NO₃)₂(s) → 2PbO(s) + 4NO₂(g) + O₂(g)
• This is the thermal decomposition of lead nitrate. Thermal decomposition reactions are endothermic as they require heat to break the bonds in the reactants.

Therefore, the correct answer is 2Pb(NO₃)₂(s) → 2PbO(s) + 4NO₂(g) + O₂(g).