WB Police constable 2013 Official Paper (Previous Year Paper)

Given that the number of bacteria in a container doubles every day.

The pot was full on 30th November 2013, then the container was half full the day before, which is 29th November 2013.

The logic followed here is :

(First number + second number ) × Third number = Fourth Number

Column 1 ⇒ ( 2 + 4) × 3 = 6 × 3 = 18

Column 2 ⇒ ( 4 + 5) × 6 = 9 × 3 = 54

Column 3 ⇒ ( 3 + 4) × 2 = 7 ×2 = 14

Hence Option 4 is the correct answer.

The logic followed here is:

Similarly,

According to the information given:

G has less money than F but more money than S.

F > G > S

E has more money than G but less than F

F > E > G

The final arrangement is as follows:

F > E > G > S

The poorest is S.

Here we have to find which option is odd

Option 1: 909/1000 = 0.909

Option 2: 9.09

Option 3: 909/100 = 9.09

Option 4: 9090/1000 = 9.09

Here except Option 1 all the other option values are same.

Hence the correct answer is Option 1

Argument 1 : Yes, otherwise the female embryo will not grow.

This argument seems to be based on the concern that knowledge of the fetus's sex might lead to gender-based discrimination, such as sex-selective abortion. This is a significant issue in some societies where there is a strong preference for one sex over the other. However, the statement "the female embryo will not grow" is not accurate. The sex of the fetus does not affect its biological development in the womb. The concern here is not about biological growth but about potential social and ethical issues.

Argument 2 : No, everyone has a right to know about the unborn child.

This argument is based on the principle of informed consent. Parents have a right to know about the health of their unborn child. But everyone does not have the right to know except the parents.

Thus Both arguments are incorrect

Similarly,

H

ence Option 2 is the correct answer.

Given:

• The fractions 1/6, 1/12, 1/20, 1/30, and -1/3

 

We use the concept of addition and subtraction of fractions using the Least Common Multiple (LCM).

 

Solution:

⇒ The LCM of 6, 12, 20, 30, and 3 is 60.

 

⇒ Convert each fraction to have the denominator 60:

   - 1/6 becomes 10/60    - 1/12 becomes 5/60    - 1/20 becomes 3/60    - 1/30 becomes 2/60    - -1/3 becomes -20/60

 

⇒ Add the fractions together: 10/60 + 5/60 + 3/60 + 2/60 - 20/60 = 0/60

 

∴ The correct option is 4) 0.

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Hence Option 3: 64 is the correct answer.

The correct answer is 'For'.

Key Points

• The most appropriate preposition to fill in the blank is 'for'.
• The preposition "for" is used to show the reason or cause for the repentance.
• It indicates what the person is feeling remorseful about or what they are seeking forgiveness for.
• For example - He had to repent for hurting his friend's feelings.

Therefore, the correct answer is 'Option 4'.

Correct sentence: He had to repent for what he had done.

The correct answer is 'Sensitive'.

Key Points

• The most appropriate word to fill in the blank is 'Sensitive'.
• In this context, 'sensitive' is used to suggest that the person's immune system or overall health is easily affected, making them more prone to catching a cold.
• 'Sensitive' is an adjective that describes someone who is easily affected or influenced by various factors, such as emotions, environment, or physical conditions.
• For Example - After the dental procedure, her teeth became extremely sensitive to hot and cold temperatures.

Therefore, the correct answer is 'Option 3'.

Correct sentence: She is so sensitive that she easily catches a cold.

The correct answer is 'Rejected'.

Key Points Let's understand the meaning of the given and the marked word:

• Accepted - It refers to something that has been approved, agreed upon, or acknowledged as valid, correct, or suitable by a person or a group of people.
• For Example - The proposal for a new project was accepted by the board of directors, and they gave the green signal for its implementation.
• Rejected - It means something that has been refused, disapproved, or not accepted as valid, suitable, or desirable by a person or a group of people.
• For Example - The manuscript was rejected by multiple publishers before finally finding a home with a smaller independent publishing house.

Therefore, the correct answer is 'Option 1'.

Additional Information Let's understand the meanings of the other given options:

• Considered - To think about something carefully, often before making a decision.
• Noted - Well known; famous.
• Followed - To come, go or happen after somebody/something.

The correct answer is 'Unfit for human consumption'.

Key Points Let's understand the meaning of the given and the marked word:

• Inedible - Not suitable to be eaten.(अखाद्य)
• For Example - The food left in the refrigerator for several weeks became moldy and inedible.
• ​The phrase "unfit for human consumption" directly implies something that cannot or should not be eaten by humans, aligning closely with "inedible."
• Example: The spoiled milk was deemed inedible, or unfit for human consumption, due to the risk of food poisoning. (जो खाने के लायक़ न हो)

Therefore, the correct answer is 'Option 2 '.

Additional Information Let's understand the meanings of the other given options:

• Vitiated - to make something less effective; to spoil something.
• Eatable - articles of food or substances that can be used as food.
• Polluted - contaminated with harmful or poisonous substances.

The correct answer is 'Rapidly'.

Key Points Let's understand the meaning of the given idiom:

• By leaps and bounds - It is used to describe significant progress or advancement happening rapidly or in large steps.
• For Example - They had a bit to go, but they were growing by leaps and bounds.

​Therefore, the correct answer is 'Option 3'.

The correct answer is 'Willingly'.

Key Points Let's understand the meaning of the underlined word:

• 'Of his own accord' means the person's own choice, decision, or willingness.
• For Example - She came of her own accord. No one asked her to come.

Therefore, the correct answer is 'Option 4'.

The correct answer is 'Misanthrope'.

Key Points Let's understand the meaning of the correct word:

• Misanthrope - A person who hates or distrusts humankind.
• For Example - A former misanthrope who now professes a newly discovered love of mankind.

Therefore, the correct answer is 'Option 2'.

Additional Information Let's understand the meanings of the other given options:

• Philanthropist - a rich person who helps the poor and those in need, especially by giving money.
• Cannibal - an animal that eats the flesh of other animals of the same kind.
• Terrorist - A terrorist is an individual who engages in acts of violence, intimidation, or coercion to achieve political, religious, or ideological goals.

The correct answer is 'Broke down'.

Key Points

• The most appropriate phrasal verb to fill in the blank is 'broke down'.
• 'Broke down' is commonly used to describe the sudden failure or malfunctioning of a vehicle or machinery.
• For example - The bus broke down on the way so I could not reach the station on time.

Therefore, the correct answer is 'Option 2'.

Additional Information Let's understand the meanings of the other given options:

• Broke off - is used to describe ending something abruptly, such as a conversation or an agreement.
• Broke out - is used for sudden occurrences like fires, wars, or diseases spreading rapidly.
• Broke up - is used to describe the end of a relationship or a group disbanding.

The logic followed here is:

Hence Option 1 is the correct answer.

The correct answer is 'Did you not speak'.

Key Points

• The correct form of the verb to use with "did" in a question or negative statement is the base form of the verb (infinitive).
• In this case, the base form of the verb "speak" is "speak," not "spoke" or "spoken."

​Therefore, the correct answer is 'Option 3'.

Correct Sentence: Why did you not speak to me earlier?

Additional Information Let's briefly go through the options and the reasons for their incorrectness:

• Did not spoke - This is incorrect because "did" should be followed by the base form of the verb, not the past tense. The correct form is "did not speak."
• Did you not spoke - This is incorrect for the same reason as option 1. The correct form is "did you not speak."
• Were you not spoken - This is a different sentence construction and does not convey the same meaning as the original sentence.

The correct answer is 'Since we have been living'.

Key Points

• The original sentence uses the present continuous tense ("are living") to indicate an ongoing action.
• Structure: Subject + am/is/are + present participle (verb+ing) + the rest of the sentence
• To maintain the same tense and meaning, the appropriate replacement is "Since we have been living in Bombay."
• This form indicates that the action of living in Bombay started in the past and is continuing up to the present moment, which aligns with the original sentence's meaning.

Therefore, the correct answer is 'Option 1'.

Correct sentence: Since we have been living in Bombay, we are unwilling to move to another city.

The correct answer is By using someone else's razor

Key Points 

HIV Infection through

• HIV (human immunodeficiency virus) is a virus that attacks the body's immune system.
• If HIV is not treated, it can lead to AIDS (acquired immunodeficiency syndrome).
• HIV is a sexually transmitted infection (STI)
• It can also be spread by contact with infected blood and from illicit injection drug use or sharing needles
• It can also be spread from mother to child during pregnancy, childbirth or breastfeeding
• Human immunodeficiency virus is an epidemic that assaults the body's immune system.
• If it is not treated, it can lead to AIDS which is acquired immunodeficiency syndrome.

 HIV does not spread by:

• Air or water
• Mosquitoes, ticks or different insects.
• Saliva, tears or sweat that isn't blended with the blood of someone with HIV.
• Shaking hands, hugging, sharing toilets, sharing dishes, silverware, or drinking glasses.
• Drinking fountains
• Other sexual sports do not contain the alternative of frame fluids.

Additional InformationMode of transmission

• HIV transmits by direct contact with certain body fluids from a person with HIV who has a detectable viral load. These fluids are:
• Blood
• Semen and pre-seminal fluid
• Rectal fluids
• Vaginal fluids
• Breast milk
• For transmission, the HIV virus in these fluids must get into the bloodstream of an HIV-negative person through a mucous membrane or by direct contact.

The correct answer is Both 1 and 2

 Key Points

• Dry ice is indeed the solid form of carbon dioxide (CO2).
• It is called "dry ice" because it does not melt into a liquid state like regular ice but instead sublimates directly from a solid to a gas.
• Dry ice is commonly used for refrigeration purposes.
• Its extremely low temperature of -78.5 degrees Celsius (-109.3 degrees Fahrenheit) makes it ideal for preserving perishable items, transporting sensitive goods, and creating a freezing environment.
• Ice made from water is not colder than dry ice. hence 3rd statement is incorrect.
• In fact, dry ice is much colder than regular ice. While frozen water has a temperature of 0 degrees Celsius (32 degrees Fahrenheit).

Additional Information

• Dry ice is widely used in the transportation of medical supplies, such as vaccines, organs for transplantation, and laboratory samples, as it can maintain a consistently low temperature during transit.
• It is also employed in the food industry to freeze and store food products, such as ice cream, frozen fruits, and meats, as well as to create smoke or fog effects in entertainment productions.
• Dry ice sublimates quickly, meaning it transforms from a solid directly into a gas without going through a liquid phase.
• This process results in the release of carbon dioxide gas, which can displace oxygen in enclosed spaces.

The correct answer is development of poor people.

Key Points Antyodaya Anna Yojana

• Antyodaya Anna Yojana was launched on 25th December 2000.
• ‘Micro Plan for Sustainable Livelihood for every deprived household’ is the major objective of this Programme.
• It was launched to help the poorest of the poor.
• It provided rice and wheat at a low rate through the public distribution system.
• It was launched by former Indian Prime Minister A.B. Vajpayee during the 9th five-year plan in India.
• The scheme was first implemented in Rajasthan.

Additional Information

• Targeted beneficiaries: The scheme primarily targets the poorest households in rural and urban areas of India.
• Identification of beneficiaries: The beneficiaries are identified through a survey conducted by state governments, considering factors such as income, occupation, and social status.
• Ration card: Eligible beneficiaries under the AAY are issued distinctive red-coloured ration cards, which help in differentiating them from other beneficiaries under the public distribution system (PDS).
• Highly subsidized food grains: Under the scheme, eligible beneficiaries receive highly subsidized food grains, namely rice and wheat, through fair-price shops.
• Quantity of food grains: Each household covered under the AAY is entitled to receive 35 kilograms of food grains per month.
• Enhancing nutritional support: The objective of the scheme goes beyond just providing access to food; it aims to enhance the nutritional support received by the poorest sections of society.

The correct answer is In wheat and rice production​  

Key Points

• The Green Revolution has had a dramatic impact on incomes and food supplies in many developing countries.
• The term green revolution was first used by William Gaud and Norman Borlaug is the Father of the Green Revolution.
• It is known for rapid increases in wheat and rice yields in developing countries brought about by improved varieties combined with the expanded use of fertilizers and other chemical inputs
• In the year 1965, the government of India launched the Green Revolution with the help of a geneticist, now known as the father of the Green Revolution (India) M.S. Swaminathan.
• The movement of the green revolution was a great success and changed the country’s status from a food-deficient economy to one of the world’s leading agricultural nations.
• It started in 1967 and lasted till 1978.
• Wheat and Rice were the two most successful crops of the Green Revolution.

The correct answer is legal right​​.

Key PointsRight to vote

• The Right to vote in India is neither a Fundamental Right nor a Constitutional Right, it is a legal or Statutory Right
• In India, the right to vote is mentioned in the Constitution and is available to all citizens who are 18 years of age or older.
• However, Article 326 of the Constitution provides for universal adult suffrage but does not specifically mention the right to vote.
• It is celebrated on 25th January every year since the year 2011 to mark the Election Commission’s foundation day.
• It encourages more voters to take part in the political process.
• It observes a different theme every year.

Additional InformationFundamental Rights:

• The Fundamental Rights have been described in Articles 12-35, Part III of the Indian Constitution.
• Right to Equality (Article 14-18)
• Right to Freedom (Article 19-22)
• Right against Exploitation (Article 23-24)
• Right to Freedom of Religion (Article 25-28)
• Cultural and Educational Rights (Article 29-30)
• Right to Constitutional Remedies (Article 32)
• The Right to Property (Article 31) was deleted from the list of Fundamental Act, 1978. By the 44th Amendment Act, 1978, it is made a normal constitutional right under Act 300A in Part XII of the Constitution.

The correct answer is (a) - (1), (b) - (2), (c) - (3), (d) - (4).

Key Points

Tenure of Judges of the Supreme Court

• The Constitution of India has not fixed the tenure of the Judges of the Supreme Court of India.
• However, it makes the following three provisions:
• He/she holds office until the age of 65 years.
• Can resign the office by writing to the President.
• Can be removed from his office by the President on the recommendation of the Parliament.
• The Judge of the Supreme Court may be removed by the President only on an address from both Houses of Parliament, on the grounds of proven misbehaviour or incapacity.

Tenure of Judges of the High Court:

• The Constitution has not fixed the tenure of a judge of a high court. However, it makes the following four provisions in this regard:
• He holds office until he attains the age of 62 years. Any questions regarding his age are to be decided by the president after consultation with the chief justice of India and the decision of the president is final.
• He can resign his office by writing to the president.
• He can be removed from his office by the President on the recommendation of the Parliament.

Tenure of CAG

• Article 148 provides for an independent office of the CAG.
• It is the supreme audit institution of India.
• Appointment:
• Appointed by the President of India by a warrant under his hand and seal.
• Tenure:
• A period of six years or up to the age of 65 years, whichever is earlier.
• Removal:
• CAG can be removed by the President on the same grounds and in the same manner as a judge of the Supreme Court.
• He does not hold his office till the pleasure of the President.

Tenure of Governor

• The term of the governor's office is normally 5 years but it can be terminated earlier
• Dismissal by the president on the advice of the council of ministers headed by the prime minister of the country.
• Dismissal of governors without a valid reason is not permitted. However, it is the duty of the President to dismiss a governor

The correct option is CFC emissions.

Key Points

• CFC emissions/Chlorofluorocarbons (CFCs) are synthetic compounds primarily used in refrigeration, air conditioning, and aerosol propellants.
• While CFCs have harmful effects on the ozone layer, they are not direct contributors to global warming and climate change.
• Carbon dioxide (CO2)  is one of the primary greenhouse gases responsible for global warming.
• CO2 is released through various human activities such as burning fossil fuels, deforestation, and industrial processes.
• Felling of trees like Deforestation, which involves the felling of trees, contributes to global warming.
• Trees absorb carbon dioxide and act as natural carbon sinks.
• Methane emissions are another potent greenhouse gas that contributes to global warming.
• Methane is released through various sources, including natural processes like wetlands and the digestive systems of ruminant animals, as well as human activities such as agriculture, coal mining, and waste management.

Additional Information

• Other greenhouse gases: Besides carbon dioxide and methane, there are other greenhouse gases such as nitrous oxide (N2O) and fluorinated gases (e.g., hydrofluorocarbons and perfluorocarbons) that contribute to global warming and climate change.

The correct answer is 'from'.

Key Points

• According to the grammatical context of the given sentence, 'from' is the most appropriate preposition.
• 'Abstain from something' is the correct grammatical structure that means to avoid using or doing something.         
• Ex- The judge told the culprit to abstain from all illegal activities.
• Similarly, in the given sentence, He was advised to avoid(abstain) all alcoholic drinks.
• Moreover, we also use the preposition 'from' with verbs like prohibit, refrain, stop, ban, debar, etc.

Hence, the correct answer is 'Option 3'.  

Additional Information

• The preposition 'in' is used to express the situation of being enclosed or surrounded by something.
• Ex- I have been living in Delhi for the last three years.
• The preposition 'at' is used to express the time when an event takes place.
• Ex- My son usually goes to bed at 8 o'clock.
• The preposition 'by' is used to indicate the means of achieving something.
• Ex- Covid-19 can only be controlled by isolating yourself.

The correct answer is 'panel'.

Key Points

• A 'panel' is the term typically used to denote a group of experts brought together to answer questions or provide insight into a particular issue.
• This term is generally used in formal or semi-formal contexts such as consultation panels, jury panels, etc.

The correct answer is 'Option 2'.

Correct sentence: Questions will be answered by a panel of experts.

Additional Information Let's understand the meanings of the other given options:

• Staff - It refers more generally to employees or the workforce of an organization.
• Bunch - A number of things, usually of the same type, fastened or growing together.
• Band - A small group of musicians who play popular music together, often with a singer or singers.

The correct answer is Sabarmati.

Key Points Civil Disobedience Movement (CDM):

• On March 2, 1930, Mahatma Gandhi informed the Viceroy about his plan of action.
• According to his plan, Gandhi, along with a band of 78 members of Sabarmati Asharam, was to march from his headquarters in Ahmedabad through the villages of Gujrat for 240 miles.
• On reaching the coast of Dandi, the salt law was to be violated by collecting salt from the beach.
• On 12 March 1930, Gandhiji led a march from his Sabarmati Ashram with his 78 followers and reached the sea at Dandi on 5 April 1930. The distance covered was 241 miles.
• Gandhiji Broke the salt law at Dandi on 6 April 1930.
• After this, the Civil Disobedience Movement was started.

Additional Information Prominent Personalities associated with CDM:

• C. Rajagopalachari:
• He started a salt march from Trichinopoly to Vedaranniyam on the Tanjore coast in Tamil Nadu, in support of the Civil Disobedience Movement.
• He was arrested on April 30, 1930.
• Khan Abdul Gaffar Khan:
• He formed a group of non-violent revolutionaries, the Khudai Khidmatgars (known as Red Shirts), who played an active role in the movement.
• Sarojini Naidu:
• ​She was the first Indian woman to become the president of the Congress, was involved, in a March towards the Dharsana Salt Works, a government salt depot.
• Surya Sen:
• He started the Chittagong Revolt Group, which carried out a raid on two armories and proclaimed the establishment of a provisional government.
• He circulated a manifesto in the name of the Indian Republican Army and called on the Indians to revolt against British rule.

The correct answer is Vallabhbhai Patel.

Key Points 

• Bardoli Satyagraha is an event in the Indian Freedom struggle against the rise in tax during times of financial trouble.
• It took place in the town of Bardoli (Gujarat) in the year 1928.
• Vallabhai Patel led the struggle successfully and after which the title “Sardaar” was bestowed upon him.
• From then Patel became an important leader in the Freedom movement and the First Deputy Prime Minister of India.

Additional InformationVithalbhai Patel

• He was an Indian legislator and political leader.
• He was the elder brother of Sardar Patel.
• He was the co-founder of the Swaraj Party.
• The Swaraj Party became the largest single party in the Central Legislature.

Mahadev Desai

• Mahadev Desai was an Indian independence activist and writer.
• He was Mahatma Gandhi's personal secretary.
• He has been variously described as "Gandhi's Boswell, a Plato to Gandhi's Socrates and Ananda to Gandhi's Buddha".
• He wrote a history of the Satyagraha in Gujarati which he translated into English as "The Story of Bardoli."
• The Indian Department of Posts published a commemorative stamp in his honour in 1983.

Mahatma Gandhi

• Mohandas Karamchand Gandhi was an Indian lawyer, anti-colonial nationalist, and political ethicist..
• He was the leader of various movements (Satyagraha, Champaran Movement, Kheda Movement, Quit India Movement)

The correct answer is (a) - (3), (b) - (4), (c) - (2), (d) - (5).

Key Points

Coal Mines in India

• It is mainly available in older Gondwana Formations of peninsular India and younger Tertiary formations of the north-eastern region.
• About 80 per cent of the coal deposits in India are of the bituminous type and are of non-coking grade.
• Jharkhand has the largest reserves of coal in India followed by Odisha and Chhattisgarh.
• The most important Gondwana coal fields of India are located in Damodar Valley West Bengal
• They lie in the Jharkhand-Bengal coal belt and the important coalfields in this region are Raniganj, Jharia, Bokaro, Giridih, and Karanpura.
• Jharia is the largest coalfield followed by Raniganj.
• The other river valleys associated with coal are the Godavari, Mahanadi, and Sone.
• The most important coal-mining centre is Singrauli in Madhya Pradesh (part of Singrauli coalfield lies in Uttar Pradesh), Korba in Chhattisgarh, Talcher, and Rampur in Odisha, Chanda–Wardha, Kamptee, and Bander in Maharashtra and Singareni in Telangana and Pandur in Andhra Pradesh.
• Tertiary coals occur in Assam, Arunachal Pradesh, Meghalaya, and Nagaland. It is extracted from Darangiri, Cherrapunji, Mewlong, and Langrin (Meghalaya); Makum, Jaipur, and Nazira in upper Assam, Namchik – Namphuk (Arunachal Pradesh), and Kalakot (Jammu and Kashmir).
• The lignite reserves stand at a level of around 36 billion tons, of which 90 % occur in the southern State of Tamil Nadu.

The correct answer is Vitamin C

Key PointsVitamin C

• In the Immune system support Vitamin C plays a crucial role in supporting the immune system, which is essential in fighting viral infections.
• Antiviral properties of Vitamin C exhibits antiviral properties, which can help inhibit the growth and replication of certain viruses.
• Reduced duration and severity and  Adequate intake of vitamin C have been associated with reduced duration and severity of viral infections such as the common cold.
• Vitamin C enhances the function of white blood cells, which are responsible for defending the body against viral pathogens.
• It Increases the production of antibodies, which are essential in recognizing and neutralizing viruses.
• Anti-inflammatory properties of Vitamin C can aid in reducing inflammation associated with viral infections.

Additional Information

The correct answer is Refraction.

Key Points

• Refraction of light: The phenomenon of the sun appearing below the meridian before sunrise and after sunset is due to the refraction of light.
• Atmospheric conditions: The Earth's atmosphere acts as a medium through which light travels. The atmosphere consists of air layers that have varying densities and refractive indices.
• Bending of light: When light travels from one medium (air) to another medium (atmosphere), it undergoes a change in its speed and direction. This change in direction is known as refraction.
• Refraction near the horizon: As the sun approaches the horizon during sunrise or moves below the horizon during sunset, its light passes through a thicker portion of the Earth's atmosphere near the horizon.
• Gradual bending of light: The denser air near the Earth's surface causes the sun's rays to gradually bend or refract. This bending allows the sun to become visible even when it is geometrically below the observer's line of sight.
• Extended daylight: The refraction of sunlight enables us to see the sun a little before it physically rises above the horizon and a little after it sets, resulting in extended periods of daylight.

The correct answer (a) - (4), (b) - (1), (c) - (3), (d) - (2).

Key Points 

Additional Information

The correct answer is (a) - (2), (b) - (3), (c) - (1), (d) - (4)

Key Points

• The order of the planets in the solar system, starting nearest the sun and working outward is the following: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune.
• The four inner system planets – Mercury, Venus, Earth and Mars- are terrestrial planets.
• The four large outer worlds — Jupiter, Saturn, Uranus and Neptune — are sometimes called the Jovian or **"Jupiter-**like" planets because of their enormous size relative to the terrestrial planets.
• The two largest planets, Jupiter and Saturn are gas giants.
• Uranus and Neptune have been nicknamed the ice giants.

Planet Sizes

1. Mercury – 1,516mi (2,440km) radius
2. Venus – 3,760mi (6,052km) radius
3. Earth – 3,959mi (6,371km) radius
4. Mars – 2,106mi (3,390km) radius
5. Jupiter – 43,441mi (69,911km) radius
6. Saturn – 36,184mi (58,232km) radius
7. Uranus – 15,759mi (25,362km) radius
8. Neptune – 15,299mi (24,622km) radius

​

Additional Information

• Mercury is the fastest planet and it revolves around the Sun in only 88 Earth days.
• Venus has a thick atmosphere which makes it the hottest planet in our solar system.
• Earth is the only planet in our solar system with liquid water on the surface.
• Mars is a red planet. Due to the effects of the iron oxide prevalent on Mars’s surface, it has a reddish appearance distinctive among the astronomical bodies visible to the naked eye.
• Jupiter is the largest planet and its dark red spot is a storm larger than Earth.
• Saturn has the brightest, most massive and most complex ring system of any planet.
• Uranus is tipped on its axis by almost 90-degrees.
• Neptune was the first planet discovered through mathematical calculations, rather than observation. It is the only planet in our solar system not visible to the naked eye.

The correct answer is Singapore.

Key PointsIndian National Army (INA)

• The Indian National Army was formed in Singapore by Mohan Singh in 1942.
• It was formed by Indian soldiers in the British Army who were captured by the Japanese Army during the Malayan campaign and at Singapore.
• It however was disbanded due to differences between Singh and the Japanese over the intended size and the specific role of the INA.
• In 1943, Subhash Chandra Bose led the organization.
• It fought alongside the Japanese Army in Burma(Myanmmar), Imphal and Kohima.
• Many of them were captured by the British Army and were put on trial. This is called as the famous Red Fort Trials of 1945.
• The trial inspired the Royal Indian Navy mutiny of 1946.
• 'Ittehad, Itmad aur Qurbani'(Unity, Faith and Sacrifice in Urdu) was its motto.

Given:

• A sells a watch to B at a loss of 10%
• B sells the watch to C at a profit of 10%

 

We use the concept of percentage loss and gain.

 

Solution:

⇒ Let's assume the initial price of the watch as 100 units.

⇒ After a loss of 10%, A sells the watch to B for 90 units.

⇒ B sells the watch to C at a profit of 10%, so the selling price becomes 99 units.

⇒ If A had sold the watch at the price at which C bought it, his loss would be the difference between the initial price and the final selling price, expressed as a percentage of the initial price.

 

∴  The correct option is 4) 1%.

Prime number:   A positive integer that has only 2 factors 1 and number itself.

∴ 85 is not a prime number.

Given:

The average of the first 15 odd numbers among the natural numbers.

Concept used:

Total = Number of entities × Average

The sum of first n odd natural numbers = n2

Calculation:

We know that, the sum of first n odd natural numbers = n2

Then, the average of first n odd natural number = n2/n = n

n = 15

∴ The required average is 15

Given:

The average age of 30 girls = 13

The average age of the first 13 girls = 15

Calculations:

Total age of 30 girls = 30 × 13

⇒ 390

Total age of 18 girls = 15 × 18

⇒ 270

∴ age of the remaining 12 girls = 390 – 270

⇒ 120

∴ required average = 120/12

⇒ 10 years

The average age of the remaining 12 girls is 10 years.

Given:

• The equation

 

We use the concept of ratios and proportions.

 

Solution:

⇒ Let's assume the common ratio to be 1.

⇒ Then, a=3×1a=3×1 , b=5×1b=5×1 , and c=7×1c=7×1 .

⇒ Substitute these values into the expression .

 

∴ The correct option is 3) 3.

Given:

• Price of wheat 1 = ₹ 2·04 per kg
• Price of wheat 2 = ₹ 2·88 per kg
• Price of mixed wheat = ₹ 2·52 per kg

 

Solution:

Let the ratio of wheat 1 and wheat 2 be x : y.

The price of mixed wheat is calculated using the formula: 

Price of mixed wheat = (Price of wheat 1 × Quantity of wheat 1 + Price of wheat 2 × Quantity of wheat 2) / (Quantity of wheat 1 + Quantity of wheat 2)

 

⇒ ₹ 2·52 = (₹ 2·04x + ₹ 2·88y) / (x + y)

⇒ ₹ 2·52(x + y) = ₹ 2·04x + ₹ 2·88y

⇒ ₹ 2·52x + ₹ 2·52y = ₹ 2·04x + ₹ 2·88y

⇒ ₹ 0·48x = ₹ 0·36y

⇒ x/y = (0.36)/(0.48)

⇒ x/y = (3/4)/(4/5)

⇒ x/y = (3/4)×(5/4)

⇒ x/y = (3×5)/(4×4)

∴ The ratio of wheat priced at ₹ 2·04 per kg and wheat priced at ₹ 2·88 per kg is 3 ∶ 4

Given:

A and B invest in a business in the ratio of 3:2

They contribute 5% of the total profit

A's capital is ₹ 4,275

Solution:

3 units = Rs. 4275 

1 unit = 4275 / 3 = Rs. 1425

 3+2 = 5 units = 1425 x 5 = Rs. 7125

95% = Rs. 7125

100% =  (7125/ 95) x 100 = Rs. 7,500

∴The total profit is Rs. 7,500

Given:

Number of person (M1) = 12

Per day work (H1) = 16 hours 

Money earn = Rs. 33,600

Number of person (M2) = 18

Per day work (H2) = 12 hours

Concept used:

(M1 × H1)/W1 = (M2 × H2)/W2

Where, 

M1 → First type of men

H1 → Per days working hours by first type men

W1 → Wages of first type men

M2 → Second type of men

H2 → Per days working hours by second type men

W1 → Wages of the second type men

Calculations: 

(M1 × H1)/W1 = (M2 × H2)/W2

⇒ (12 × 16)/33,600 = (18 × 12)/W2 

⇒ W2 =  37,800

∴ The 18 men working 12 hours a day will earn Rs. 37,800 per week

Given:

• 8% of X equals 4% of Y

 

Solution:

⇒ The ratio of percentages of X and Y is given as 8% : 4%, which simplifies to 2 : 1. This means that for every 2% of X, there is 1% of Y.

 

⇒ If we want to find out what percentage of Y is equal to 20% of X, we can set up the equation 20% of X = ?% of Y.

 

⇒ Since the ratio of X to Y is 2 : 1, we can divide the 20% of X by 2 to find the equivalent percentage of Y.

 

⇒ 20% divided by 2 equals 10%.

∴ The correct option is 1) 10% of Y.

The correct answer is Quicklime.

Key Points

• Quicklime, also known as calcium oxide (CaO), is a white, crystalline compound.
• When quicklime is added to water, an exothermic reaction occurs, releasing a significant amount of heat.
• The reaction between quicklime and water is highly exothermic due to the formation of calcium hydroxide (Ca(OH)2).
• The heat produced during the reaction can be quite intense and can cause water to boil or steam to be released.
• This property of quicklime is often utilized in various industrial processes that require the generation of heat or steam.
• Quicklime is commonly used in applications such as cement manufacturing, steel production, and water treatment.

 Additional Information

• Quicklime is produced by heating limestone (calcium carbonate) at high temperatures, resulting in the release of carbon dioxide and the formation of calcium oxide.
• The reaction of quicklime with water is also known as slaking or hydration.
• The exothermic nature of the reaction is attributed to the high energy released during the formation of calcium hydroxide.

The correct answer is Lead.

Key Points

• Lead contamination in Newspapers often contains lead-based ink, which can transfer to the food when it comes into contact with the paper.
• Health hazards: Lead is a toxic heavy metal that can have detrimental effects on human health, particularly on the nervous system, kidneys, and reproductive system.
• Absorption into food: Lead can leach into the food through direct contact or when the food is hot or acidic, increasing the likelihood of contamination.
• Ingestion risks: Consuming food contaminated with lead can lead to lead poisoning, especially if it is a regular practice.
• The risks associated with lead contamination are particularly concerning for children and pregnant women, as lead exposure can have severe developmental and neurological consequences.
• It is recommended to use food-grade packaging materials such as plastic wraps, aluminium foil, or parchment paper to avoid lead contamination when wrapping food.

Given:

• Distance travelled upstream = 60 km
• Time taken to travel downstream = 2(1/2) hours = 5/2 hours
• Distance travelled downstream = 60 km
• Time taken to travel upstream = 3(3/4) hours = 15/4 hours

Solution:

Let the speed of the boat in still waters be x km/h and the speed of the stream be y km/h.

⇒ Speed of the boat upstream = (x - y) km/h

⇒ Speed of the boat downstream = (x + y) km/h

 

Using the formula Speed = Distance ÷ Time, we have:

⇒ x - y = 60 ÷ (15/4) = 16

⇒ x + y = 60 ÷ (5/2) = 24

 

Adding the above two equations, we get:

⇒ 2x = 40

⇒ x = 20

 

∴ The speed of the boat in still waters is 20 km/h

Given:

• Profit = 40%
• Selling price of 10 apples = Rs 1

Solution:

Let the cost price of 1 apple be x.

⇒ Selling price of 1 apple = x + 40% of x = 1.4x

⇒ Selling price of 10 apples = 10 × 1.4x = 14x

⇒ 14x = 1

⇒ x = 1/14

∴ The seller bought 14 apples with the money.

Shortcut Trick

If a sum of money becomes ‘n1’ times in 'T1’ years and 'n2’ times in 'T2’ years at simple interest, then

(n1 - 1)/(n2 - 1) = (T1)/(T2) 

n1 = 3, n2 = 2 (doubles), T1 = 20

(3 - 1)/(2 -1) = (20)/(T2)

⇒ 2/1 = (20)/(T2)

⇒ T2 = 10 years

∴ The sum of money becomes doubles in 10 years with same interest rate.

Let the numbers are 3x and 4x

As the H.C.F. is the common factor so H.C.F. is x

So, H.C.F = x = 4

So the numbers are 12 and 16

L.C.M × H.C.F. = Product of two numbers

⇒ L.C.M = Product/H.C.F.

⇒ L.C.M = (12 × 16) /4

∴ L.C.M = 48

The correct answer is 'Who can bear an unprovoked insult?'.

Key Points

• The original sentence is a negative statement stating that nobody has the capacity to bear an unprovoked insult.
• To convert this into an interrogative form, you're essentially asking for the identity of the people who can bear such an insult.
• "Who" is the interrogative pronoun that is used to ask about the identity or selection of individuals.
• Therefore, "Who can bear an unprovoked insult?" is the appropriate interrogative form to inquire about who, if anyone, has the ability to bear such an insult.

Hence, correct answer is "Option 3".

The correct answer is, 'He runs faster than a deer.'.

Key Points

• In the given sentence, the use of  "as fast as," is an incorrect form for the comparative degree.
• To correctly compare the speed of "he" with that of a deer, we need to use "faster than."
• The correct sentence should be "He runs faster than a deer," which indicates that "he" runs at a higher speed than the deer.
• The comparative degree of "fast" is "faster," which is appropriately used in this sentence to make the comparison.

​Therefore, the correct answer is 'Option 1'.

The correct answer is 'When the sun rose, the fog dispersed'.

Key Points

• The most appropriate sentence is 'When the sun rose, the fog dispersed'.
• Conjunction "when" is used to indicate the relationship between the two events.
• It is used to show that the fog dispersing is a result or consequence of the sun rising.
• Rest of the options do not flow as smoothly as option 1 in this context.

Therefore, the correct answer is 'Option 1'.

Correct sentence: When the sun rose, the fog dispersed.

The correct answer is 'The boy asked his mother where she was going'.

Key Points

• The reporting verb "said" changes to "asked" because the boy is asking a question rather than making a statement.
• Additionally, the pronoun "you" changes to "she" because we are reporting what the boy said to his mother.
• The question word "where" remains unchanged, and the word order is adjusted to form a grammatically correct sentence.

Therefore, the correct answer is 'Option 3'.

Correct sentence: The boy asked his mother where she was going.

The correct answer is 'Run over'.

Key Points

• The most appropriate phrase to fill in the blank is 'Run over'.
• 'Run over' means to be hit and knocked down by a vehicle, typically with the wheels passing over the person or object.
• For Example - He ran over a six-year-old child as he was driving back from a party.

Therefore, the correct answer is 'Option 2'.

Correct sentence: A boy was run over by a motor-car.

Additional Information Let's understand the meanings of the other given options:

• Run into -  It means to collide with or bump into something.
• Run at - Rush towards someone to attack them or as if to attack them.

The correct answer is  '' Let the work be done at once''. 

Key Points

• The correct form of the sentence in passive voice is: "Let the work be done at once."
• Passive voice is a type of sentence structure where the object of an action is the subject of the sentence. In other words, the action is done to the subject, instead of the subject doing the action.
• The basic structure of passive voice is 'object + auxiliary verb + past participle of main verb.'
• "Do the work at once" is a command in active voice with an implied subject "You".
• Translating commands into passive voice often involves using the structure 'Let + object + be + past participle.'
• This is because 'let' is often used to form imperative sentences in passive voice.

Therefore, the correct answer is Option 2.

Given:

P to Q - Walk

Q to P - Taxi

Solution:

If P to Q and Q to P is by Taxi, it takes less than 4 hours i.e 16 hrs - 4 hrs = 12 hrs

Q to P by Taxi will take 12hrs / 2 = 6 hrs 

P to Q by Walk take 10 hrs (16 - 6)

If coming and going is only on foot, it will take totally 20 hours

P to Q - Walk = 10 hrs

Q to P - Walk =  10 hrs

∴ Coming and going is only on foot will take 20 hrs

Given:

• Length of train 1 = 80 meters
• Length of train 2 = 90 meters
• Speed of train 1 = 10 m/s
• Speed of train 2 = 7 m/s

Concept: Relative speed = speed of train 1 + speed of train 2 (when trains are moving towards each other)

Calculation:

⇒ Relative speed = 10 + 7 = 17 m/s

⇒ Total distance to be covered = Length of train 1 + Length of train 2 = 80 + 90 = 170 meters

⇒ Time taken to cross each other = Total distance / Relative speed = 170 / 17

∴ The time taken by the two trains to cross each other is 10 seconds.

The correct answer is Elected Members of the Legislative Assembly.

Key Points Rajya Sabha

• Indian Parliament consists of Lok Sabha, Rajya Sabha and the President of India.
• Rajya Sabha is the upper house of the parliament and is termed the House of Elders in the Indian Parliament.
• It has an important role in reviewing and altering the laws initiated by the Lok Sabha.
• The Rajya Sabha can also initiate legislation.
• A bill is required to pass through the Rajya Sabha in order to become law.
• The members of the Rajya Sabha are elected by the elected members of the Legislative Assemblies of various states.
• There are 233 elected members plus 12 members nominated by the President.

Additional InformationProportional Representation (PR) in Rajya Sabha elections:

• The Single Transferable Vote system (STV), the third variant of PR, is followed for Rajya Sabha elections.
• Under the system, every State has a specific quota of seats in the Rajya Sabha.
• The members of the Rajya Sabha are elected by the respective members of State legislative assemblies.
• This means the voters are the MLAs in that State.
• Every MLA is required to rank candidates according to his or her preference and a candidate must secure a minimum quota of votes to be declared the winner.

The correct answer is Chief Justice of the High Court.

Key Points

• It is the Chief Justice of the concerned State High Court who administers the oath of office to the Governor.
• In his absence, it is the senior-most judge of the High Court who administers the oath.

Additional Information

• The governor is the chief executive head of the state.
• Like the president, he is a nominal executive head (titular or constitutional head).
• The governor also acts as an agent of the central government. Therefore, the office of the governor has a dual role.
• Governor is appointed by the president by warrant under his hand and seal.
• A governor can hold office beyond his term of five years until his successor assumes charge.

President

• Articles 52 to 78 in Part V of the Constitution deal with the Union executive.
• The Union executive consists of the President, the Vice-President, the Prime Minister, the council of ministers and the attorney general of India.
• President is elected not directly by the people but by members of the electoral college consisting of:
• the elected members of both the Houses of Parliament;
• the elected members of the legislative assemblies of the states; and
• the elected members of the legislative assemblies of the Union Territories of Delhi and Puducherry
• The President’s election is held in accordance with the system of proportional representation by means of the single transferable vote and the voting is by secret ballot.
• The President holds office for a term of five years.

Chief Justice of India:

• The Chief Justice is responsible for the allocation of work to other judges.
• The Chief Justice administers the oath of office to the President In the absence of the President and the Vice-President, the Chief Justice sits as the Acting President of India
• The Chief Justice is the ex-officio Chancellor of most autonomous law schools in India.
• The individual must be a citizen of India.
• The person must not exceed 65 years of age.

Chief Justice of the High Court:

• The Chief justice of a high court is appointed after consultation with the CJI and governor of the state concerned.
• If it is for a common high court, then the governors of all the concerned state high courts are consulted

Solution:

Let the total number of students in the class be T.

 

The number of males is 10% of the total number of students, so M=0.1T.

 

The number of females is 1/4 of the total number of students, so F= 0.25T.

 

The ratio of males to females is M/F = 0.1T/0.25T = 1/2.5 = 2/5

 

Therefore, the answer is 5:2.

The correct answer is Palk Strait.

Key Points 

• The Palk Strait is a strait between India and Srilanka.
• It connects the Bay of Bengal in the northeast with the Gulf of Mannar in the southwest.
• This chain extends between Dhanushkodi on Pamban (Rameswaram) Island in Tamil Nadu and Mannar Island in Sri Lanka.

Important Points 

• Palk Strait is a water body that separates India and Sri Lanka.
• Palk strait is a water body between the Jaffna district of Sri Lanka and the Tamil Nadu state of India. The Palk strait connects the Bay of Bengal in the northeast with Palk Bay in the southwest.
• The Palk strait is named after the Governor of Madras Robert Palk, during the Company Raj period.
• Vaigai River of Tamil Nadu flows into the Palk Strait.

Additional Information 

• The Radcliffe Line is the boundary line between India and Pakistan.
• The McMahon Line is the boundary line between northeastern India and China.

The correct answer is Petrochemical Industry​**.**

Key Points 

• An emerging industry is an industry that is in the early stages of development.
• The petrochemical industry is one of the fastest-growing industries in the world.
• The industry is expected to grow by 5% annually over the next five years.
• The growth of the petrochemical industry is being driven by a number of factors, including:
• Increased demand for plastics and other petrochemical products
• The development of new technologies that are making it more efficient to produce petrochemicals
• The growth of the global economy
• The petrochemical industry is a major source of jobs and economic activity.
• The industry is also a major contributor to pollution.

Additional Information

• The petrochemical industry is a broad term that encompasses the production of a wide range of products, including plastics, fertilizers, and chemicals.
• The industry is highly capital-intensive and requires a significant amount of investment in infrastructure.
• The petrochemical industry is also a major source of pollution, and there is growing concern about the environmental impact of the industry.

Given:

The price of coal being increased by 20%, family reduce the consumption of coal by 20%.

Concept Used: When there is successive increase or decrease on same quantity

Effective percentage change = a  + b + $\dfrac{(a \times b)}{100}$

Use (+)positive sign for increase and negative(-) sign for reduce.

Calculation:

a = 20% ; b = -20%

Effective Percentage = 20 - 20 + $\dfrac{(+20) \times (-20)}{100}$

Effective percentage change = - 4 %

So, the family's expenses for coal will be decreased by 4%.

The correct answer is Bachendri Pal.

Key PointsBachendri Pal

• Bachendri Pal was the fifth woman in the world and the first Indian female to climb Mount Everest
• Bachendri Pal  is an Indian mountaineer.
• Bachendri Pal was born to a Bhotiya family on 24th May 1954 in Nakuri village, in the Uttarkashi district in the North Indian state of Uttarakhand.
• In 1984, she became the first Indian woman to reach the summit of Mount Everest.
• She was awarded the third-highest civilian award Padma Bhushan by the Government of India in 2019.​

Santosh Yadav

• Santosh Yadav is a female mountaineer from India
• She was born in Rewari district of Haryana in 1967
• She was the first Indian woman to climb Everest twice.

Junko Taibei

• The first woman to climb Mount Everest was Junko Taibei.
• Junko Tabei preferred to be known as the 36th person to climb Everest.

Arunima Sinha

• India's Arunima Sinha became the world's first female amputee to climb Mount Everest in 2013.
• The 30-year-old has now become the first female amputee to climb Mount Vinson, the highest peak in Antarctica.

Additional Information 

• Mount Everest is the tallest mountain (8848m) peak in the world.
• It is in Nepal and runs across the Nepal-China border
• It is a part of the Himalayas which are young fold mountains and are tectonically active (it is still increasing in size)
• Seven Summits consist of the seven highest peaks that lie in the 7 major tectonic plates. These peaks are:
• African Plate –Mt.  Kilimanjaro
• Antarctic Plate –Mt.  Vinson
• Australian Plate – Mt. Puncak Jaya / Kosciuszko
• Eurasian Plate – Mount Everest
• North American Plate – Mt. Denali
• Pacific Plate – Mauna Kea
• South American Plate – Aconcagua

Calculation:

When we divide the largest four-digit no. i.e. 9999 by 88

We get 55 as the remainder.

⇒ Largest 4-digit no. divisible by 88 is 9999 - 55 = 9944

∴ The correct answer is 9944

Given:

• The sequence is 1 - 2 + 3 - 4 + 5 - 6 + 7 - 8 + ....... till 1000

Solution:

The sequence can be grouped into pairs of two terms each: (1 - 2) + (3 - 4) + (5 - 6) + (7 - 8) + ....... till 1000

Each pair of terms sums to -1: (-1) + (-1) + (-1) + (-1) + ....... till 1000

There are a total of 1000/2 = 500 pairs of terms.

So, the sum of the sequence is (-1)×500 = -500

 

∴ The value of the number till 1000 following this sequence is -500

The logic followed here is:

Hence the correct answer is Option 4.

The correct answer is Dr. K. Radhakrishnan.

Key Points

Dr. K. Radhakrishnan

• He served as Chairman of ISRO from 2009 to 2014.
• He is a recipient of the Padma Bhushan, India's third-highest civilian award.
• Major projects of ISRO under him were Mars Orbiter Mission (Mangalyaan), GSLV and Indian Cryogenic Stage.

Additional Information

• Mangalyaan was launched on November 5, 2013, on a PSLV-C25 rocket from the Satish Dhawan Space Center in Sriharikota, India.
• It was India's first interplanetary mission and the first Mars orbiter to be launched by an Asian country.
• Mangalyaan successfully entered Mars orbit on September 24, 2014.
• It is still in orbit around Mars and is continuing to collect scientific data.

Important Points

Chandrayaan-1

• Chandrayaan-1 was launched on October 22, 2008, under the chairmanship of G. Madhavan Nair.
• The project director of Chandrayaan-1 was Mylswamy Annadurai.
• Chandrayaan-1 carried 11 scientific payloads, including a lunar orbiter, an impact probe, and a lunar rover.
• The mission achieved its primary objective of successfully mapping the lunar surface.

Chandrayaan-2

• Chandrayaan-2 was launched on July 22, 2019, under the chairmanship of K. Sivan.
• The project director of Chandrayaan-2 was Ritu Karidhal.
• Chandrayaan-2 carried 8 scientific payloads, including a lunar orbiter, a lander, and a rover.
• The mission's primary objective was to soft-land a rover on the lunar surface.

Chandrayaan-3

• Chandrayaan-3 was launched on 14 July 2023, under the chairmanship of S. Somanath.
• Chandrayaan-3 is planning to attempt the soft-land rover on the lunar surface.
• The propulsion module will transport the lander and rover to orbit around the moon.
• It will also continue to orbit the moon, gathering data.
• It is carrying seven advanced scientific instruments to analyse the lunar soil and study the moon’s environment to help scientists gather valuable data about the surface, subsurface, and the presence of water ice, which could be crucial for future human missions.

Here we have to find the odd one. 

The months April, September and November has only 30 days, while July has 31 days.

Hence the correct answer is Option 1: July

The correct answer is Gas.

Key Points 

Manometers 

• Manometer is a device that measures the pressure of a gas or vapour,
• Manometers work by balancing the pressure of the atmosphere against the pressure of a liquid.
• The most common liquid used in manometers is mercury.
• The height of the liquid column in the manometer is directly proportional to the pressure being measured.

Additional Information 

• Manometers can be used to measure a wide range of pressures, from very low pressures to very high pressures.
• Manometers are used in a variety of applications, including:
• Measuring the pressure of gases in cylinders.
• Measuring the pressure of liquids in pipes.
• Measuring the pressure of the atmosphere.
• Checking the performance of vacuum pumps.

The correct answer is Assam.

Key Points Kaziranga national park is situated in Assam.

• It is the oldest park in Assam.
• It has been declared a national park in 1974.
• Kaziranga national park is famous for its great Indian one-horned rhinoceroses.
• It hosts two-thirds of the world's great one-horned rhinoceroses.
• It is a UNESCO World Heritage Site in India
• Kaziranga national park was declared as a world heritage Site by UNESCO in 1985**.**

Given :

A vendor loses the selling price of 4 oranges on selling 36 oranges

Concept used :

Loss = Cost price - selling price 

Loss% = (cost price - selling price)/(cost price) × 100 

Calculations :

Let the cost price be C 

Let the selling price be S 

The cost price of 36 oranges be 36C 

The selling price of 36 oranges be 36S

According to the question 

Loss = 36C - 36S 

⇒ 4S = 36C - 36S        (loss is the selling price of 4 oranges)

⇒ 40S = 36C 

⇒ S/C = 36/40 

⇒ 9/10 

Now, 

Loss per cent = (10 - 9)/(10) × 100

⇒ 10%

 22 + 11 + 44 + 33 = 110

16 + 40 + 32 + 24 = 112

Similarly,

x + 12 + 34 + 23 = 114 

 x + 69 = 114 

 x = 114 - 69 = 45

Hence the correct answer is Option 3: 45

<br>

The correct answer is "Cruel".

Key Points

• 'Kind' means generous, helpful, and thinking about other people's feelings.(उदार, मददगार और दूसरे लोगों की भावनाओं के बारे में सोचने वाला)
• Example: One should be kind towards the poor of society.
• 'Cruel' means someone extremely unkind and causing pain to people or animals.(लोगों या जानवरों को पीड़ा पहुँचाने वाला)
• Example: "The king's cruel reign caused great suffering."
• It is clear from the above points, that 'Cruel' is the antonym of 'Kind'.
• Hence, 'Option 4' is the correct answer.

Additional Information

• Let's have a look at the meaning of the other words-
• Famous- someone known and recognized by many people.(ऐसा व्यक्ति जिसे बहुत से लोग जानते हों और पहचानते हों)
• Similar- two things or persons having the same qualities, characteristics, or appearance.(दो चीजें या व्यक्ति जिनके गुण, विशेषताएँ या रूप एक जैसे हों)
• Honest-  good and truthful, and not lying to anyone.(अच्छा और सच्चा, और किसी से झूठ नहीं बोलना)

Shortcut Trick

In successive division, the given quotients are treated as remainders to find the original number.

Work backward from the last divisor: [(Last Divisor × Last Quotient) + Last Remainder].

Assume the minimal final quotient is 1: (6 × 1 + 4) = 10.

Apply to next divisor: (5 × 10 + 3) = 53.

Apply to first divisor: (4 × 53 + 2) = 214.

∴ The correct answer is 214.

Alternate Method

Given:

Divisors = 4, 5, 6

Successive Remainders (given as quotients) = 2, 3, 4

Method: Successive division follows the rule: Dividend = (Divisor × Quotient) + Remainder. In successive division, the quotient of one step becomes the dividend for the next.

N ÷ 4 rem 2 53 ÷ 5 rem 3 10 ÷ 6 rem 4 1 Calculation: [(6 × 1 + 4) × 5 + 3] × 4 + 2 = 214

Calculation:

Assume the final quotient after dividing by 6 is 1.

⇒ Number before last division (Quotient 2) = (6 × 1) + 4 = 10

⇒ Number before second division (Quotient 1) = (5 × 10) + 3 = 53

⇒ Original Number (N) = (4 × 53) + 2 = 214

∴ The correct answer is 214.

Additional Information

Successive Division Formula

For divisors d₁, d₂, d₃ and remainders r₁, r₂, r₃, the number N = d₁d₂r₃ + d₁r₂ + r₁ (assuming final quotient is 0).

General Solution

All such numbers can be represented as (LCM of divisors × k) + Smallest Number. For this case, N = 120k + 214.

Successive vs. Simultaneous Division

In successive division, the quotient of the first division becomes the dividend for the second. In simultaneous division, the original number is divided by each divisor independently.

The correct answer is 'None of the above'.

Key Points

• All of the sentences are grammatically correct.
• There is a university in Kolkata."
• This simple sentence correctly states the existence of a university in the location (Kolkata). The proper use of "there" in the sentence followed by the "be" verb (is) makes this statement accurate.
• "He is a university student."
• The grammar structure here is also correct: The subject pronoun "he" is used properly with "is," the singular form of the verb "to be" in the present tense. It's followed by the noun phrase "a university student."
• "A university will be established at Asansol."
• The statement here uses the future passive voice correctly. The verb structure "will be established" correctly indicates a future passive action (a university being established by an unspecified actor), and the preposition "at" correctly denotes the location (Asansol).

 

Therefore, the correct answer is "Option 4".

The correct answer is 'than'.

Key Point

• According to the grammatical context of the sentence, 'than' is the most appropriate preposition.
• We always use ‘than’ after the comparative degree adjective when we do a comparison between two things, people, etc.
• Similarly, in the given sentence, the narrator's age is compared with the age of his/her brother & 'younger' is the comparative degree adjective.
• Example- The beautiful face of Sita makes her look younger than her age.

From the above points, we can conclude that the correct answer is '**Option 1'.**​

 Additional Information

• The preposition 'by' is used to indicate the means of achieving something.
• ​Example- You can crack the UPSC exam by preparing hard for it.
• ​The preposition 'with' means having or possessing something.
• ​Example- I have a beautiful vase with a unique red flower.
• ​The preposition 'to' is used to express motion in the direction of a particular location.
• ​Example- Mr. Rawal always comes to the park for an evening walk with us.

Solution:

Length of the train = 110 m

Length of the bridge = 132 m

Speed of the train = 72 km/hr = 72 × (5/18) = 20 m/sec

As we know,

Time = Distance/Speed

⇒ Time = (110 + 132)/20

⇒ Time = 242/20

∴ Time = 12.1 seconds

The correct answer is 'Am'.

Key Points

• The most appropriate word to fill in the blank is 'Am'.
• The pronoun "I" is the first person singular form of the pronoun, and it is the subject of the sentence.
• When using a relative clause to describe the subject (I), we use the appropriate form of the verb "to be" which is "am" in the first person singular.
• This makes the sentence grammatically correct.

Therefore, the correct answer is 'Option 1'.

Correct sentence: I, who am your superior, should be respected.

Calculation:

Let the boys & girls be 7x & 5x respectively.

⇒ 7x + 5x = 2400

⇒ 12x = 2400

⇒ x = 2400/12 = 200

⇒ Girls = 5x = 5 × 200 = 1000

∴ The correct answer is 1000

Indra is 7th from left and Jaya is 5th from right

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After swapping positions, Jaya is 19th from the right

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Total number of people in the line = 19 + 7 - 1

                                                       = 25

Indra position from left = Total - Indra position from right + 1

                                     = 25 - 5 + 1

                                      = 21

The correct answer is 'Patricide'.

Key Points

• 'Patricide' means an individual who murders his or her father.(एक व्यक्ति जो अपने पिता की हत्या करता है)
• ​Example- John is arrested for patricide after killing his father.
• Hence, the correct answer is 'option 2'.

​ 

Additional Information​

• Let's have a look at the meaning of the other words-
• Fratricide- the act of killing one's own brother.(अपने ही भाई की हत्या करने का कार्य)
• Homicide- the killing of one person by another.(एक व्यक्ति की दूसरे व्यक्ति द्वारा हत्या)
• Matricide- the act of killing one's own mother.(अपनी ही माँ की हत्या करने का कार्य)

The logic followed here is:

 Sum of the squares of the top numbers = bottom number

 ⇒ 18² + 15² = 324 + 225 = 549

   ⇒ 17² + 19² = 289 + 361 = 650

  ⇒ 15² + 14² = 225 + 196 = 421

Hence the correct answer is Option 1: 421

Solution:

1. In the beginning, there were 95 people and 200 days of supplies, so the total amount of supplies was 95 * 200 = 19000 units.
2. After 5 days, 95 * 5 = 475 units of supplies were consumed.
3. So, the remaining supplies were 19000 - 475 = 18525 units.
4. After 5 days, 30 people left the camp, so there were 95 - 30 = 65 people left.
5. Therefore, the supplies will last for 18525 / 65 = 285(16/19) days.

So, the correct answer is 285.

Option 1: Car: Road - Car is a vehicle that is designed to be driven on roads.

Option 2: Rocket: Space - Rocket is a vehicle that is designed to launch spaceships into space.

Option 3 : Ship: Ocean - Ship is designed to sail in the ocean.

Option 4: Airplane: Pilot - Pilot is a person who operates an airplane.

Hence Option 4 is the correct answer.

The correct answer is 'Of'.

Key Points

• The most appropriate word to fill in the blank is 'Of'.
• When comparing two things, we use the word "better" and follow it with "than" to indicate the comparison.
• However, in this sentence, the word "the better" is already followed by "the two boys," which means the comparison has been established.
• To complete the comparison, we need the word "of" after "better" to indicate that Raman is better of the two boys.

​Therefore, the correct answer is 'Option 4'.

Correct Sentence: Raman is the better of the two boys.

The correct answer is 'Born'.

Key Points

• The most appropriate word to fill in the blank is "born".
• The word "born" is the past participle of the verb "bear."
• When used in this context, it refers to the act of being brought into existence or being given birth to.
• So, the correct form is "born," indicating that he lost his mother right after he came into this world.

Therefore, the correct answer is 'Option 3'.

Correct Sentence: He lost his mother as soon as he was born.