SSC CHSL Previous Paper 26 (Held On: 19 Oct 2020 Shift 1) (Previous Year Paper)

The correct answer is No improvement.

Key Points

• The present perfect tense is a verb tense that shows an action or state that either occurred at an indefinite time in the past or began in the past and continued to the present time.
• The structure is given below:
• Subject + has/have + V3 + object. (active voice)
• Object + has/have + been + V3 + subject. (passive voice)
• ​Example:
• ​He has played some matches for the Indian Cricket team. (active voice)
• Some matches have been played by him for the Indian Cricket team. (passive voice)
• In the given sentence, we need to follow the structure in the active voice form.
• Since the given sentence talks about the action that continues till the present time, 'has been' is the most appropriate choice of the verb form in the underlined part.
• Thus we are left with the 1st option as the only correct choice.
  

Correct Sentence: Over the past 20 years, there has been a constant decline in the variety of vegetables that we eat because the native varieties are no longer available.

The correct answer is CADB.

Key Points

• While arranging the parts of the passage, we should find some grammatical or contextual connections between them:
• Sentence C introduces us to the subject 'the quest for longer battery life'. It is the introductory sentence and will be put in the first place.
• Sentence A tells us about how the battery behaves after using it for a long period of time. It will be put in second place.
• Sentence D tells us about a method to improve battery life. It will be put in third place.
• The last sentence is B as it mentions the particular type i.e. lithium-ion battery.
  

Thus, the correct order is- Smartphone users are forever in search of longer battery life, but unfortunately, battery capacity inevitably declines with age. You’ve probably noticed, with great disappointment, that the battery doesn’t seem to last as long as it did when it was brand new. However, one thing you can do to prolong the life of your battery and handset is partial charging. Partial charging is just fine for lithium-ion batteries and can actually have some positive benefits for cell longevity.

The correct answer is Stingy.

Key Points

• Let's look at the meanings of the given word and marked option:-
• Benevolent- serving a charitable rather than a profit-making purpose.
• Stingy- unwilling to give or spend.
• ​​Let's look at the meanings of the other given options:- 
• Generous- showing kindness toward others.
• Friendly- kind and pleasant.
• Liberal- willing to respect or accept behavior or opinions different from one's own.
• Hence from the given meanings, we find that Benevolent and Stingy are antonyms.

Hinglish

• आइए दिए गए शब्द और चिह्नित विकल्प के अर्थ देखें: -
• Benevolent - लाभ कमाने के उद्देश्य के बजाय धर्मार्थ की सेवा करना।
• Stingy - देने या खर्च करने को तैयार नहीं।
• अन्य दिए गए विकल्पों के अर्थ में आइए नज़र: -
• Generous - दूसरों के प्रति दया दिखाने वाला।
• Friendly - दयालु और सुखद।
• Liberal - किसी से अलग व्यवहार या राय का सम्मान या स्वीकार करने के लिए तैयार।
• इसलिए दिए गए अर्थों से, हम पाते हैं कि Benevolent और Stingy विलोम हैं।

The correct answer is Say the truth about something, even if it is not pleasant.

Key Points

• Let's look at the meaning of the given idiom:
• Call a spade a spade- speak plainly without avoiding unpleasant or embarrassing issues
  
• Example: 
• That dress made her look fat, let’s call a spade a spade before she goes out wearing it and embarrasses herself.
• ​Thus from the explanation given above, we find that the 4th option is the correct choice.
  

 ​​​​

Additional Information  

• Let's look at the origin of the idiom:
• The phrase is said to have originated from the slang that was used for African-Americans, which is ‘spade’.
• This was used in a derogatory manner in the United States and was popular in the early 20th century.

The correct answer is has proved​​.

Key Points

• The present perfect tense is a verb tense that shows an action or state that either occurred at an indefinite time in the past or began in the past and continued to the present time.
• The structure is given below:
• Subject + has/have + V3 + object. (active voice)
• Object + has/have + been + V3 + subject. (passive voice)
• ​Example:
• ​He has played some matches for the Indian Cricket team. (active voice)
• Some matches have been played by him for the Indian Cricket team. (passive voice)
• In the given sentence, we need to follow the structure in the active voice form.
• Since the given sentence talks about the action that continues till the present time, 'has proved' is the most appropriate choice of the verb form as the subject (woman) is singular.
• Thus we are left with the 1st option as the only correct choice in the 5th blank.

Hinglish

• वर्तमान पूर्ण काल ​​एक क्रिया काल है जो एक क्रिया या स्थिति को दर्शाता है जो या तो अतीत में अनिश्चित समय पर हुई थी या अतीत में शुरू हुई थी और वर्तमान समय तक जारी रही।
• संरचना नीचे दी गई है:
• Subject + has/have + V3 + object. (active voice)
• Object + has/have + been + V3 + subject. (passive voice)
• उदाहरण:
• ​He has played some matches for the Indian Cricket team. (active voice)
• Some matches have been played by him for the Indian Cricket team. (passive voice)
• दिए गए वाक्य में, हमें active voice के रूप में संरचना का पालन करने की आवश्यकता है।
• चूँकि दिया गया वाक्य उस क्रिया के बारे में बात करता है जो वर्तमान समय तक चलती रहती है, इसलिए 'has proved' क्रिया का सबसे उपयुक्त विकल्प है क्योंकि कर्ता (स्त्री) एकवचन है।
• इस प्रकार हमारे पास 5वें रिक्त स्थान में एकमात्र सही विकल्प के रूप में पहला विकल्प बचा है।

The correct answer is appreciation.

Key Points

• Let's look at the meanings of the given options:- 
• charm- the power or quality of giving delight or arousing admiration.
• gratefulness- feeling or showing an appreciation of kindness; thankfulness.
• content- in a state of peaceful happiness.
• appreciation- recognition and enjoyment of the good qualities of someone or something.
• ​As per the possible context of the sentence, the subject got recognition when she was named 'entrepreneur of the year'.
• Hence, from the given meanings, we find that the 4th option i.e. appreciation is the correct choice in the 4th blank.

Hinglish

• आइए दिए गए विकल्पों के अर्थ देखें: -
• charm - प्रसन्नता या प्रशंसा जगाने की शक्ति या गुण।
• gratefulness- दया की भावना या प्रशंसा दिखाना; धन्यवाद; कृतज्ञता।
• content - शांतिपूर्ण खुशी की स्थिति में; सामग्री।
• appreciation - किसी या किसी चीज के अच्छे गुणों की पहचान और आनंद; प्रशंसा।
• वाक्य के संभावित संदर्भ के अनुसार, विषय को मान्यता तब मिली जब उसे 'entrepreneur of the year' नामित किया गया।
• इसलिए, दिए गए अर्थों से, हम पाते हैं कि चौथा विकल्प यानी appreciation चौथे रिक्त स्थान में सही विकल्प है।

The correct answer is perfectly.

Key Points

• Let's look at the meanings of the given options:- 
• perfectly- in a manner or way that could not be better.
• hardly- scarcely (used to qualify a statement by saying that it is true to an insignificant degree).
• truly- in a truthful way.
• happily- in a happy way.
• ​As per the possible context of the sentence, the subject does everything in an accurate manner.
• Hence, from the given meanings, we find that the 1st option i.e. perfectly is the correct choice in the 3rd blank.

Hinglish

• आइए दिए गए विकल्पों के अर्थ देखें: -
• perfectly - पूर्ण रूप से।
• hardly - शायद ही (किसी कथन को यह कहकर अर्हता प्राप्त करने के लिए उपयोग किया जाता है कि यह एक नगण्य डिग्री के लिए सच है)।
• truly - एक सच्चे तरीके से।
• happily -खुश तरीके से।
• वाक्य के संभावित संदर्भ के अनुसार, विषय सब कुछ सटीक तरीके से करता है।
• इसलिए, दिए गए अर्थों से, हम पाते हैं कि पहला विकल्प यानी तीसरे रिक्त स्थान में पूरी तरह से सही विकल्प है।

The correct answer is on.

Key Points

• ​There are some fixed prepositional phrases given below:
• ​by dint of, out of jealousy, in danger, on one's own, by car/bus/train, owing to, on a trip, for a change, etc.
• Example:
• I told him how scared I was of being on my own.​
• Hence according to the phrases given above*, 'on'** will be the correct choice in the given blank.*
• This phrase 'on one's own' means unaccompanied by others; alone or unaided.
• Hence the 2nd option will be the correct choice in the 2nd blank.

Hinglish

• नीचे दिए गए कुछ निश्चित पूर्वसर्ग वाक्यांश हैं:
• ​by dint of, out of jealousy, in danger, on one's own, by car/bus/train, owing to, on a trip, for a change, आदि।
• उदाहरण:
• I told him how scared I was of being on my own.​
• अतः ऊपर दिए गए वाक्यांशों के अनुसार दिए गए रिक्त स्थान में 'on' सही विकल्प होगा।
• इस मुहावरे 'on one's own' का अर्थ है अकेले या बिना सहायता के।
• अतः दूसरा विकल्प दूसरे रिक्त स्थान में सही विकल्प होगा।

The correct answer is residence.

Key Points

• The given blank is preceded by a possessive adjective i.e. her.
• Thus the blank must contain a noun which is qualified by 'her'.
• Let's look at the meanings of the given nouns:-
• resident- a person who lives somewhere permanently or on a long-term basis
• residence- a person's home; the place where someone lives
• ​As per the possible context of the sentence, Harbhajan made sweets at the place where he lived.
• Hence, from the given meanings, we find that the 4th option i.e. residence is the correct choice in the 1st blank.

Hinglish

• दिए गए रिक्त स्थान के पहले एक possessive adjective अर्थात her है।
• इस प्रकार रिक्त स्थान में एक संज्ञा होनी चाहिए जो 'her' द्वारा योग्य हो।
• आइए दी गई संज्ञाओं के अर्थ देखें: -
• resident - एक व्यक्ति जो स्थायी रूप से या दीर्घकालिक आधार पर कहीं रहता है
• residence - एक व्यक्ति का घर; वह स्थान जहाँ कोई रहता हो
• वाक्य के संभावित संदर्भ के अनुसार, हरभजन ने उस स्थान पर मिठाई बनाई जहां वह रहते थे।
• इसलिए, दिए गए अर्थों से, हम पाते हैं कि चौथा विकल्प यानी residence पहले रिक्त स्थान में सही विकल्प है।

The correct answer is Shy.

Key Points

• Let's look at the meanings of the given word and marked option:

• Timid- showing a lack of courage or confidence; easily frightened

• Shy- being reserved or having or showing nervousness or timidity in the company of other people

• ​​​Let's look at the meanings of the other given options: 

• Willful- (of an immoral or illegal act or omission) intentional; deliberate

• Kind- a group of people or things having similar characteristics

• Strong- having the power to move heavy weights or perform other physically demanding tasks

• Hence from the given meanings, we find that Timid and Shy are synonyms.

• आइए दिए गए शब्द और चिह्नित विकल्प के अर्थ देखें:

• Timid- साहस या आत्मविश्वास की कमी दिखाते हुए; आसानी से भयभीत

• Shy- अन्य लोगों की कंपनी में आरक्षित होने या घबराहट या समयबद्धता दिखाने वाले

• अन्य दिए गए विकल्पों के अर्थ में आइए नज़र:

• Willful- (एक अनैतिक या अवैध कृत्य या चूक के) जानबूझकर; विचार

• Kind- लोग या चीजों के समान लक्षण होने के एक समूह

• Strong- भारी वजन को स्थानांतरित करने या शारीरिक रूप से मांग वाले अन्य कार्यों को करने की शक्ति होना

• इसलिए दिए गए अर्थ से, हम पाते हैं कि Tmidऔर Shy समानार्थक शब्द हैं।

The correct answer is to struggled with.

Key Points

• The present perfect tense is a verb tense that shows an action or state that either occurred at an indefinite time in the past or began in the past and continued to the present time.
• The structure is given below:
• Subject + has/have + V3 + object. (active voice)
• Object + has/have + been + V3 + subject. (passive voice)
• ​Example:
• ​He has played some matches for the Indian Cricket team. (active voice)
• Some matches have been played by him for the Indian Cricket team. (passive voice)
• In the given sentence, we need to follow the structure in the active voice form.
• Since the given sentence talks about the action that continues till the present time, 'has struggled' is the most appropriate choice of the verb form instead of 'has to struggled' in the part given in the 4th option.
• Thus we are left with the 4th option as the only correct choice.
  

Correct Sentence: The country has struggled with the problems of child labour.

Hinglish

• Present perfect tense एक क्रिया काल है जो एक क्रिया या अवस्था को दर्शाता है जो या तो अतीत में अनिश्चित समय पर घटित होता है या अतीत में शुरू होता है और वर्तमान समय तक जारी रहता है।
• संरचना नीचे दी गई है:
• Subject + has/have + V3 + object. (active voice)
• Object + has/have + been + V3 + subject. (passive voice)
• उदाहरण:
• ​He has played some matches for the Indian Cricket team. (active voice)
• Some matches have been played by him for the Indian Cricket team. (passive voice)
• दिए गए वाक्य में, हमें active voice रूप में संरचना का पालन करने की आवश्यकता है।
• कार्रवाई है कि वर्तमान समय तक जारी रहता है के बारे में दिए गए वाक्य वार्ता के बाद से, ''has struggled' के बजाय 4 विकल्प में दिए गए हिस्से में 'has to struggled' के क्रिया रूप का सबसे उपयुक्त विकल्प है।
• इस प्रकार , उत्तर 4 विकल्प है

सही वाक्य: The country has struggled with the problems of child labour.

The correct answer is DBAC.

Key Points

• While arranging the parts of the passage, we should find some grammatical or contextual connections between them:
• Sentence D introduces us to the survey conducted by FSSAI. It is the introductory sentence and will be put in the first place.
• Sentence B tells us about the results of the above-mentioned survey. It will be put in second place.
• Sentence A asks us a very relevant question regarding our food choices. It will be put in third place.
• The last sentence is C as it mentions another repercussion of the food that we eat these days.
  

Thus, the correct order is- A survey conducted by the Food Safety and Standards Authority of India under the Union Agriculture Ministry tested random samples of vegetables in markets all over India. They found that the vegetables contained very high, toxic levels of banned pesticides and the pesticide levels were more than 1000 times the permissible levels. So, what exactly are we eating? And is our food giving rise to the many health problems today?

The correct answer is was done very well​​​.

Key Points

• The present perfect tense is a verb tense that shows an action or state that either occurred at an indefinite time in the past or began in the past and continued to the present time.
• The structure is given below:
• Subject + has/have + V3 + object. (active voice)
• Object + has/have + been + V3 + subject. (passive voice)
• ​Example:
• ​He has played some matches for the Indian Cricket team. (active voice)
• Some matches have been played by him for the Indian Cricket team. (passive voice)
• In the given sentence, we need to follow the structure in the active voice form.
• Since the given sentence talks about the action that continues till present time, 'has done' is the most appropriate choice of the verb form as the subject (The Indian cricket team) is singular.
• Thus we are left with the 4th option as the only correct choice.

Correct Sentence: The Indian cricket team has done very well this year and is ranked number one now.

The correct answer is impossible.

Key Points

• Let's look at the meanings of the given options:- 
• exciting- cause strong feelings of enthusiasm and eagerness in (someone).
• boring- 

not interesting; tedious.

• pleasant- giving a sense of happy satisfaction or enjoyment.
• impossible- not able to occur, exist, or be done.
• As per the context of the sentence, the mountain couldn't be climbed by the subject as the weather wasn't good.
• Hence, from the given meanings, we find that the 4th option i.e. impossible is the correct choice.
  

​Correct Sentence: We found it impossible to climb further due to bad weather and decided to give up the expedition.

The correct answer is Alliteration.

Key Points

• Let's look at the meaning of the marked option:
• Alliteration- the occurrence of the same letter or sound at the beginning of adjacent or closely connected words
• For e.g.- Peter Piper picked a peck of pickled peppers
• Let's look at the meanings of the other given options: 
• Rhyme- poetry or verse marked by rhyme
• Rhythm- a strong, regular, repeated pattern of movement or sound
• Assonance- in poetry, the repetition of the sound of a vowel or diphthong in nonrhyming stressed syllables near enough to each other for the echo to be discernible
• Hence, from the given meanings, we find that Alliteration is the correct one-word substitute.

The correct answer is Imigration.

Key Points

• Let's look at the correct spelling and meaning of the marked option:
• Immigration- the action of coming to live permanently in a foreign country
• Example: 
• There are strict limits on immigration (into the country).

Let's look at the meanings of the other given options:

• Unsurpassable- not able to be exceeded in quality or degree
• Inadvertent- not resulting from or achieved through deliberate planning
• Equivalent- equal in value, amount, function, meaning, etc.
• आइए चिह्नित विकल्प की सही वर्तनी और अर्थ देखें:-
• Immigration- किसी विदेशी देश में स्थायी रूप से रहने की क्रिया
• उदाहरण:
• There are strict limits on immigration (into the country).

आइए दिए गए अन्य विकल्पों के अर्थ देखें:

• Unsurpassable- गुणवत्ता या डिग्री में पार करने में सक्षम नहीं
• Inadvertent- जानबूझकर नियोजन के माध्यम से प्राप्त या प्राप्त नहीं किया गया
• Equivalent- मूल्य, राशि, कार्य, अर्थ आदि में समान।

The correct answer is Ravina asked her little brother where he was going to play​.

Key Points​

• Let's look at the steps to change the sentence from direct to indirect speech:
• The tense of direct speech is changed only when the reporting verb is in the past tense.
• When the direct speech is in an interrogative form, we follow the steps given below:
• The reporting verb asked will remain the same.
• The word 'where will follow the removal of comma and inverted commas.
• Change the reported speech from interrogative to assertive.
• Present continuous tense (are you going) in direct speech changes to past continuous in indirect speech (he was going).
• ​The personal pronouns will be changed according to the subject and object of the reporting verb.
• Here 'you' will be converted into 'he' as per the subject.
• ​​At last line up the remaining part.
  

Following these steps, we finally get - Ravina asked her little brother where he was going to play.

The correct answer is Be old-fashioned​.

Key Points

• Let's look at the meaning of the given idiom:
• Be behind the times- not having or showing knowledge of current ideas or styles
• Example: 
• But they were also half a century behind the times in design.
• ​Thus from the explanation given above, we find that the 3rd option is the correct choice.
  

​​​​

Additional Information

• Let's look at the origin of the idiom:
• The meaning of the given idiom is evident from the words used in it.

The correct answer is Auditor.

Key Points

• Let's look at the meanings of the given options: 
• Auditor- a person who conducts an audit
• Aviator- a pilot
• Collector- an official who is responsible for collecting money
• Radiator- a thing that radiates or emits light, heat, or sound
• Hence, from the given meanings, we find that Auditor is the correct one-word substitute.

The correct answer is New telephone cables are being laid in our colony.

Key Points

• The structures for both the active and passive forms for present continuous tense are given below:
• Active form- Subject + is/am/are + V1 + ing + Object
• Passive form- Object + is/am/are + being + V3 + by + Subject
• Example:
• He is playing a Cricket match. (active voice)
• A Cricket match is being played by him. (passive voice)
• The given sentence is an assertive one and in the active voice form.
• Follow the passive form structure for the present continuous tense given above:
• Exchange the places of the subject and object. (They - New telephone cables)
• Since the given subject 'cables' is a plural noun, the auxiliary verb 'are' will also be plural.
• Now the verb will be used accordingly. (being laid)
• At last line up the remaining part.
  

Following these steps, we finally get - New telephone cables are being laid in our colony.

The correct answer is Disposeable.

Key Points

• Let's look at the correct spelling and meaning of the marked option:
• Disposable- (of an article) intended to be used once, or until no longer useful, and then thrown away
  
• Example: 
• The market no longer offers disposable plastic bags at checkout.
  

Let's look at the meanings of the other given options:

• Heavenly- divine
• Advisable- (of a course of action) to be recommended; sensible
• Harass- subject to aggressive pressure or intimidation

The correct answer is Obscure.

Key Points

• Let's look at the meanings of the given word and marked option:
• Conspicuous- standing out so as to be clearly visible (विशिष्ट)
• Obscure- not discovered or known about; uncertain (अस्पष्ट)
• ​​Let's look at the meanings of the other given options: 
• Distinct- recognizably different in nature from something else of a similar type (अलग)
• Noticeable- easily seen or noticed; clear or apparent (ध्यान देने योग्)
• Apparent- clearly visible or understood; obvious (स्पष्ट)
• Hence from the given meanings, we find that Conspicuous and Obscure are antonyms.

The correct answer is recognition.

Key Points

• Let's look at the meanings of the given options: 
• reward- a thing given in recognition of one's service, effort, or achievement
  
• resolution- a firm decision to do or not to do something
• recognition- identification of someone or something or person from previous encounters or knowledge
• award- give or order the giving of (something) as an official payment, compensation, or prize to (someone)
• As per the context of the sentence, the subject was given a special award as an appreciation of his work for financially weaker children.
• Hence, from the given meanings, we find that the 3rd option i.e. recognition is the correct choice.
  

​Correct Sentence: In recognition of the great work he is doing for economically weaker children, he has been given a special award.

The correct answer is who came in contact​.

Key Points​

• ​There are some fixed prepositional phrases given below:
• ​by the dint of, out of jealousy, come in contact with something, by the dozen, owing to, on a trip, for a change, etc.
• For example:
• He was in direct contact with the kidnappers.
• ​The phrase **'**come in contact with something' means the state or condition of physical touching.
• Thus the 4th option is the correct choice.
  

Correct Sentence: Swami Vivekanand’s vast knowledge of Eastern and Western culture appealed to all those who came in contact with him.

Additional Information

• There are some verbs/nouns/adjectives which are followed by fixed preposition given below:
• ​Exonerate from, refrain from, suspicious of, interested in, inured to, accused of, predilection for, respite from, vexed at, etc.
• Example:
• ​After spending some time on the island they became inured to the hardships.

The correct answer is Regret.

Key Points

• Let's look at the meanings of the given word and marked option:
• Remorse- deep regret or guilt for a wrong committed
• Regret- used in polite formulas to express apology for or sadness over something unfortunate or unpleasant
• ​​​Let's look at the meanings of the other given options: 
• Affection- a gentle feeling of fondness or liking
• Indifference- lack of interest, concern, or sympathy
• Reproach- address (someone) in such a way as to express disapproval or disappointment
• Hence from the given meanings, we find that Remorse and Regret are synonyms.

The option figure that will come next in the following series is shown below:

The triangle on the circle is rotating 45 degree in anti clockwise direction and the triangle inside the circle is rotating 90 degree in clockwise direction.

So, option 2 will be the next figure in the series.

Hence, ‘option 2’ is the correct answer.

The pattern followed here is:

According to the alphabetical positions of the letters,

1) ROLIF → R - 3 = O; O - 3 = L; L - 3 = I; I - 3 = F

2. TQNKH → T - 3 = Q; Q - 3 = N; N - 3 = K; K - 3 = H

3. YWUSQ → Y - 2 = W; W - 2 = U; U - 2 = S; S - 2 = Q 

4) VSPMJ → V - 3 = S; S - 3 = P; P - 3 = M; M - 3 = J

Hence, ‘YWUSQ’ is the odd one out.

The correct mirror image of the given figure when the mirror is placed to the right side of the figure is shown below:

Hence, ‘option 1’ is the correct answer.

The Venn diagram that best illustrates the relationship between the classes Table, Transistor, and Furniture is shown below:

Table is a furniture. 

Transistor is a semiconductor device.

Hence, ‘option 2’ is the correct answer.

The logic is:

Stringent : Flexible → Stringent is antonym of flexible.

Similarly,

Authoritarian : Liberal → Authoritarian is antonym of Liberal.

Hence, ‘Authoritarian : Liberal’ is the correct answer.

Given:- a_cdeacdd_acdeea_ deac _e

1. ceacce → accde / acdde / acdee / aacde / accee

2. aaaccd → aacde / acdda / acdee / aacde / accde

3) ceaccd → accde / acdde / acdee / aacde / accde

4. bbbcbd → abcde / acddb / acdee / abcde / acbde

• Option (3) gives a cyclic pattern of accde - acdde - acdee - aacde - accde

Hence, ‘ceaccd’ is the correct answer.

The logic is:

62 - 3 = 33

72 + 4 = 53

8² - 3 = 61

9² + 4 = 85

102 - 3 = 97

112 + 4 = 125

12² - 3 = 141

Hence, ‘125’ is the correct answer.

The least possible Venn diagram is:

Conclusions:

I. Some buses are vans. → True (As, Some buses are trucks and All trucks are vans → Some buses are vans)

II. All vans are buses → False (As, Some buses are trucks and All trucks are vans → Some vans are buses)

Hence, only conclusion I follows.

The pattern followed here is:

According to the alphabetical positions of the letters,

Letters are coded by its opposite letter.

Similarly,

Hence, ‘YLLP’ is the correct answer.

The logic is:

10² - 1 = 99

9² + 1 = 82

82 - 1 = 63

72 + 1 = 50

62 - 1 = 35

52 + 1 = 26

Hence, ‘26’ is the correct answer.

1. 8 - 3 ÷ 16 × 36 + 6 = 14 

After changing the symbol by their meaning, we get:

L.H.S = 8 × 3 - 16 + 36 ÷ 6

= 24 – 16 + 6

= 30 – 16

= 14 = R.H.S

2. 8 + 3 ÷ 16 × 36 - 6 = 14

After changing the symbol by their meaning, we get:

L.H.S = 8 ÷ 3 - 16 + 36 × 6

= 2.67 – 16 + 216

= 218.27 – 16

= 202.27 ≠ R.H.S

3. 8 ÷ 3 - 16 + 36 × 6 = 14

After changing the symbol by their meaning, we get:

L.H.S = 8 - 3 × 16 ÷ 36 + 6

= 8 – 1.34 + 6

= 14 – 1.34

= 12.66 ≠ R.H.S

4. 8 × 3 ÷ 16 + 36 - 6 = 14

After changing the symbol by their meaning, we get:

L.H.S = 8 + 3 - 16 ÷ 36 × 6

= 8 + 3 – 2.64

= 11 – 2.64

= 8.36 ≠ R.H.S

Hence, ‘8 - 3 ÷ 16 × 36 + 6 = 14’ is the correct answer.

The paper when unfolded will appear as shown below:

Hence, ‘option 2’ is the correct answer.

The pattern followed here is:

Sum of the position of letters of word - 2

R → 18

A → 1

M → 13

P → 16

RAMP = (18 + 1 + 13 + 16) - 2 =46

Now,

H → 8

O → 15

R → 18

S → 19

E → 5

HORSE = (8 + 15 + 18 + 19 + 5) - 2 = 63

Similarly,

C → 3

A → 1

R → 18

P → 16

E → 5

N → 14

T → 20

E → 5

R → 18

CARPENTER = (3 + 1 + 18 + 16 + 5 + 14 + 20 + 5 + 18) - 2 = 98

Hence, ‘98’ is the correct answer.

The logic is:

(12, 48, 8) → (12, 12 × 4, 12 - 4) → (12, 48, 8)

Similarly,

(15, 45, 12) → (15, 15 × 3, 15 - 3) → (15, 45, 12) 

Hence, ‘(15, 45, 12)’ is the correct answer.

All options except 'Barrack' are names of homes of different animals, while 'Barrack' is a building or group of buildings in which soldiers live.

Hence, ‘Barrack’ is the odd one out.

The logic is as;

First number × Third number = (Second number)²

(25, 20, 16) → 25 × 16 = 20²

(25, 20, 16) → 400 = 400

Similarly,

(32, 16, 8) → 32 × 8 = 16²

(32, 16, 8) → 256 = 256

Hence, the correct answer is (32, 16, 8).

The number of triangles in the given figure is shown below:

Hence, ‘17’ is the correct answer.

Arrange the following words in a logical and meaningful order.

3. Pupil
4. Pinna
5. Throat
6. Liver
7. Bladder

Body organs arranged in the order from head to toe.

Hence, ‘3 - 5 - 1 - 4 - 2’ is the correct answer.

The pattern followed here is:

According to the alphabetical positions of the letters,

Similarly,

Hence, ‘UPKJCLMY’ is the correct answer.

By using the symbols in the table given below, we can draw the following family tree:

Babita is sister of Sushma.

Hence, ‘Sister’ is the correct answer.

Confusion Points

Statement given in the question is 'Dharmendar is the only brother of Sushma.', here the word 'only' depicts that Dharmendra is the only brother of Sushma and Babita. All the other siblings must be females.

The logic is:

Both numbers are cube of prime numbers

2197 : 1331 → 13³ : 11³  (13, 11 are prime numbers)

Similarly, 

343 : 125 → 73 : 5³  (7 and 5 are prime numbers)

Hence, ‘343 : 125’ is the correct answer.

In the two dice shown above, '1' is the common face on both of them, so 5, 3, 6 and 4 are adjacent to '1' and the remaining face '2' is opposite to '1'.

Hence, ‘2’ is the correct answer.

The logic is:

Foundation is a layer of bricks, etc. under the surface of the ground that forms the solid base of a building or house.

Similarly,

Root is the part of a plant or tree that grows under the ground and takes in water and food from the soil.

Hence, ‘Root’ is the correct answer.

Let Shruti's age is  ‘x’ years.

So, Raman’s age = 2x years

Age of Raman ten years ago was (2x – 10) years and that of Shruti was (x – 10) years.

According to question:

2x – 10 = 3(x – 10)

=> 2x – 10 = 3x – 30

=> 2x – 3x = -30 + 10

=> -x = - 20

=> x = 20

So, present age of Shruti is 20 years.

Hence, ‘20 years’ is the correct answer.

The option in which the given figure is embedded when rotation is NOT allowed is shown below:

Hence, the correct answer is "option (1)".

Concept used :

tan(90° - θ) = cot θ 

cot (90° - θ) = tan θ 

cosec²θ - cot²θ = 1 

sec²θ - tan²θ = 1 

Calculations :

tan (63° - θ) = cot [90° - (63° - θ)]

⇒ cot (27° + θ) 

⇒ tan²20° = cot²70° 

⇒ cot²53° = tan²37°

Putting all the values in the equation 

 tan (63° - θ) - cot (27° + θ) + (cosec²70° - tan²20° )/(sec²37° - cot253°) = cot (27° + θ) - cot (27° + θ) + (cosec270° - cot270° )/(sec237° - ​tan237°)

⇒ 0 + (1/1) 

⇒ 1 

∴ Option 4 will be the correct choice.

Given :

 α and β are two roots of the quadratic equation ax2 - bx + c = 0

Concept used : 

For equation ax2 - bx + c = 0

Sum of roots (α + β) = -(b/a) 

Product of roots (α × β) = c/a 

Calculations :

Sum of roots (α + β) = -(-b/a) = b/a 

Product of roots (α × β) = c/a 

Now, 

(1/α) + (1/β) = (α + β)/(αβ)

⇒ (b/a)/(c/a) 

⇒ b/c 

∴ Option 4 will be the correct answer

Given :

The average score of a cricketer for 20 matches is 52 runs. His highest score is more than its lowest score by 120 runs.

If highest and lowest score are excluded than average will be 50. 

Concept used :

Average = Sum of all observations/Number of observations

calculations :

Total score of 20 matches = 20 × 52 

⇒ 1040 runs 

Total score of 18 matches = 18 × 50

⇒ 900 runs 

Highest score + lowest score = 1040 - 900 

⇒ 140 

Lowest score = 140 - highest score 

According to the question 

Highest score - lowest score = 120 

Highest score - (140 - highest score) = 120 

⇒ 2(Highest score) = 260

⇒ Highest score = 260/2 

⇒ 130 runs 

∴ His highest score will be 130 runs.

Concept used :

Percentage increment = (Final value - initial value)/(Initial value) × 100 

Calculations :

Production increment in 2011 = (800 - 500)/(500) × 100 = 60%

Production increment in 2012 = (1200 - 800)/(800) × 100 = 50%

Production increment in 2014 = (1300 - 900)/900) × 100 = 44.44% 

Production increment in 2016 = (1500 - 1000)/(1000) × 100 = 50% 

∴ Option 4 is the correct answer.

Given :

A can complete a task in 18 days while B can complete the same task in 12 days.

Both worked for 6 days, then A left. 

Concept used :

Total work = Work per day × Number of working days 

Calculations :

Total work = LCM of 12 and 18 = 36 units 

A's per day work = 36/18 = 2 units 

B's per day work = 36/12 = 3 units 

Their total work in 6 days = 6 × (2 + 3) 

⇒ 30 units 

Remaining work = 36 - 30 = 6 units 

Time taken by B to complete the remaining work = 6/3 

⇒ 2 days 

∴ Option 2 will be the right answer.

Concept used :

Percentage increment = (Final value - initial value)/(Initial value) × 100 

Calculation :

For year 2001 = (440 - 410)/(410) × 100 = 7.31%

For year 2002 = (570 - 440)/(440) × 100 = 29.54%

For year 2003 = (710 - 570)/570) × 100 = 24.56%

For year 2004 = (0/710) × 100 = 0%

∴ The correct answer will be option 4.

Given :

In triangle ABC, AD, BE and CF are medians and G is the centroid of the triangle and the area of the triangle DGC is 20 cm².

Concept used :

All medians of a triangle divide a triangle in 6 triangles of equal area. 

Calculations :

Area of triangles AGF, AGE, DGB, DGC, EGC and FGB are equal. 

∆ DGC = 20 cm²

So, 

∆ AGF = ∆ BGF = 20 cm²

∆ AGF + ∆ BGF = 20 + 20 

⇒ 40 cm²

∴ Option 1 will be the correct answer.

Given :

A triangle PQR is right-angled at Q. E and F are midpoints of QR and PR respectively.

Concept used :

The area of a triangle is directly proportional to the square of the side of the triangle. 

In a triangle ABC if E and F are midpoints of side AB and AC then EF will be half of BC 

Calculation :

EF = (1/2) QP  (Concept given above)

Area of triangle REF/Area of triangle PQR = (EF/QP)²

⇒ 1/4 

Area of triangle REF : Area of PQR = 1 : 4 

Area of triangle = Area to triangle REF + Area of quad PQEF 

Let the area of 4 units 

Area of quad PQEF = 4 - 1 

⇒ 3 units 

So, 

Area of quad PQEF : Area of triangle PQR = 3 : 4 

∴ Option 1 will be the correct answer.

Given :

Radius of wire is 28 cm. 

Concept used :

Area of the circle = π radius²

Area of the square = side × side 

Circumference of the circle = 2π × radius 

Perimeter of square = 4 × side 

Calculations :

Circumference of the circle = Perimeter of the square (Length will remain same) 

⇒ 2 π × 28 = Perimeter of square 

Perimeter of square = 8 × 22 

So , 

Side of the square = 44 cm 

Now, 

Area of square = 44 × 44 

⇒ 1936 cm²

Area of the circle = π × 28 × 28 

⇒ 2464 cm²

Difference of the areas = 2464 - 1936 

⇒ 528 cm²

∴ Option 4 will be the correct answer.

Given:

The marked price of a shirt was Rs. 1,800. A man bought the same shirt for Rs. 1,200 after getting two successive discounts

First discount is 12%.

Concept used:

MP[(100 - x)/(100)][(100 - y)/(100)] = SP

Discount = x% and y%

SP = Selling Price

MP = Marked Price

Calculations:

Let the 2nd discount be x% 

According to the question 

1800(100 - 12)/(100)] [(100 - x)/100)] = 1200

100 - x = 75.8 

⇒ x = 24.2 

∴ Option 2 will be the correct answer.

Concept used :

Percent increment = (Final value - initial value)/(Initial value) × 100 

Calculations :

Increment for A = (100/100) × 100 = 100% 

Increment for B = (120/50) × 100 = 240% 

Increment for C = (80/220) × 100 = 72.72% 

Increment for D = (50/150) × 100 = 33.33% 

∴ Option 4 will be the correct answer.

Concept used :

l = a + (n - 1) × d , where a = first term, l = last number, n = number of terms and d is the common difference 

Calculations :

Let the total number divisible by 13 be n 

First number divisible by 13 between 800 to 2000 is 806 

Last number divisible by 13 between 800 to 2000 is 1989 

So, 

⇒ 806 + (n - 1) × 13 = 1989    [here, a = 806, d = 13 and l = 1989}

⇒ (n - 1) × 13 = 1183 

⇒ n - 1 = 91 

⇒ n = 92 

∴ Option 2 will be the correct answer.

Given :

x - (1/x) = 8 

Concept used :

(a - b)² = a² + b² - 2ab 

(a + b)2 = a2 + b2 + 2ab 

Calculations :

x - (1/x) = 8 

Squaring both sides 

x² + (1/x)² - 2 = 64 

⇒ x2 + (1/x)2 = 66 

Now again squaring both sides 

⇒ x⁴ + (1/x)⁴ + 2 = 66²

⇒ x⁴ + (1/x)⁴ = 4356 - 2 

⇒ 4354 

∴ Option 4 will be the correct answer.

Shortcut TrickCalculation:

⇒ x - (1/x) = 8 then,

⇒ x2 + (1/x)2 = (8)² + 2 

⇒ x2 + (1/x)2 = 66

Now,

⇒ x4 + (1/x)4 = (66)² - 2

⇒ x4 + (1/x)4 = 4356 - 2 

⇒ x4 + (1/x)4 = 4354

∴ The correct answer is 4354.

Calculations :

Numbers from 101 to 200 where 9 is at unit digit are ⇒ 109, 119, 129, 139, 149, 159, 169, 179, 189, 199

Similarly there will be 10 numbers from 201 to 300 and so on up to from 900 to 1000 

Total number from 101 to 1000 = 900 

Total number where 9 is at unit place = 10 × 9 = 90 

Required percentage = (90/900) × 100 

⇒ 10% 

∴ Option 4 will be the correct answer.

Shortcut Trick

Ratio of length to breadth = 3 : 2

Product of ratio parts = 3 × 2 = 6 parts

6 parts = 864 m² ⇒ 1 part = 144 m² ⇒ 1 ratio unit = 12 m

Length = 3 × 12 = 36 m, and Breadth = 2 × 12 = 24 m

Perimeter = 2 × (36 + 24) = 120 m

Cost of fencing = 120 × Rs. 15 = Rs. 1,800

∴ The correct answer is Rs. 1,800.

Alternate Method

Given:

Breadth of rectangular field = 2/3 of its Length

Area of rectangular field = 864 m²

Rate of fencing = Rs. 15/m

Calculations:

Let the length of the rectangular field be L meters.

⇒ Breadth = (2/3) × L

⇒ Area of rectangle = Length × Breadth

⇒ 864 = L × (2/3) × L

⇒ 864 = (2/3) × L²

⇒ L² = (864 × 3) ÷ 2

⇒ L² = 432 × 3

⇒ L² = 1296

⇒ L = √1296 = 36 m

⇒ Breadth = (2/3) × 36 = 24 m

⇒ Perimeter of the rectangular field = 2 × (Length + Breadth)

⇒ Perimeter = 2 × (36 + 24)

⇒ Perimeter = 2 × 60 = 120 m

⇒ Cost of fencing = Perimeter × Rate of fencing

⇒ Cost of fencing = 120 × 15 = Rs. 1,800

∴ The correct answer is Rs. 1,800.

Additional Information

Area and Perimeter of Rectangle

The surface area of a rectangle is Area = Length × Breadth, and the perimeter is the total boundary distance given by Perimeter = 2 × (Length + Breadth).

Diagonal of a Rectangle

The diagonal (d) of a rectangle is the shortest straight distance between opposite vertices, calculated as d = √(Length² + Breadth²).

Fencing vs. Turfing Calculations

Fencing requires finding the boundary value (Perimeter), while operations like turfing, flooring, tiling, or plowing require calculating the region occupied (Area).

Given : 

The percentage profit earned by selling a mobile for Rs. 12,000 is equal to the percentage loss incurred by selling the same mobile for Rs. 9,000.

Concept used :

Profit % = (Selling price - cost price)/(cost price) × 100 

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

Calculations :

Let the cost price of the mobile be 'C' 

According to the question: 

⇒ (12000 - C)/(C) × 100 = (C - 9000)/(C) × 100 

⇒ C = 10500 rupees 

Selling price of mobile at 20% profit = 10500 + 20% of 10500 

⇒ 10500 + 2100 

⇒ 12600 rupees

∴ Option 4 will be the correct choice.

Given :

A man travelled a distance of 1200 km in 16 hours. He travelled partly by car at a speed of 40 km/h, and partly by train at a speed of 80 km/h.

Concept used :

Time = Distance/speed 

Calculations :

Let the distance travelled with 80 km/h speed be 'x' km 

Let the distance travelled with 40 km/h speed be '1200 - x' km 

Time for x km = x/80 

Time for 1200 - x km = (1200 - x)/40 

Total time = (x/80) + (1200 - x)/40 

⇒ (x/80) + (1200 - x)/40 = 16 

⇒ x = 1120 km 

Distance travelled by car = 1200 - x 

⇒ 1200 - 1120 

⇒ 80 km. 

∴ Option 2 will be the right answer. 

Shortcut TrickCalculation:

Speed of man's overall journey = 1200/16 = 75 km/hr

Now,

Ratio of time = 1 : 7

So (1 + 7) = 8 units = 16 hrs

⇒ 1 unit = 2 hrs

So distance travelled by car = 40 × 2 = 80 km.

∴ The correct answer is 80 km.

Given :

A person borrowed 1,200 at 8% p.a. and Rs. 1,800 at 10% p.a. as simple interest for the same period. He has to pay Rs. 1,380 in all as interest.

Concept used :

Interest = (Principle × Rate of interest × time)/100 

Calculation: 

Let the time period be 't' years 

Interest for Rs. 1200 at 8% rate of interest = (1200 × 8 × t)/100 = 96t 

Interest for Rs. 1800 at 10% rate of interest = (1800 × 10 × t)/100 = 180t 

Total interest = 1380 

⇒ 96t + 180t = 1380 

⇒ 276t = 1380 

⇒ t = 5 years. 

∴ Option 4 will be the correct answer.

Calculations :

Follow the above-given table to solve this question.

⇒ $4 \frac{4}{5} \div [2 \frac{1}{5} - \frac{1}{2} [{1 \frac{1}{4}-(\frac{1}{4} - \frac{1}{5})}]]$

⇒ $\frac{24}{5} \div [\frac{11}{5} - \frac{1}{2} ({\frac{5}{4}-\frac{1}{20}})]$

⇒ $\frac{24}{5} \div [\frac{11}{5} - \frac{1}{2} ({\frac{24}{20}})]$

⇒ $\frac{24}{5} \div [\frac{11}{5} - \frac{3}{5}]$

⇒ $\frac{24}{5} \div {8\over5}$

⇒ 3

∴ The correct choice will be option 4.

Given :

Total number of lecturers are 500 

Calculations :

Lecturers in Chemistry = 20% of 500 

⇒ 100 

Female lecturers in Chemistry = (1/5) of 100   (Ratio of male to female is 4 : 1)

⇒ 20 

Lecturers in mathematics = 30% of 500 

⇒ 150 

Female lecturers in mathematics = (3/10) of 150    (Ratio of male to female is 7 : 3)

⇒ 45 

Difference of female lecturers of Chemistry and Mathematics = 45 - 20 

⇒ 25 

∴ The correct answer will be option 4.

Formula used :

A³ + B³ = (A + B)(A² + B² - AB)

Calculations :

$\frac{(12.5)^3 + (7.5)^3}{(12.5)^2 + (7.5)^2 - 12.5 \times 7.5}$

⇒ $\frac{(12.5 + 7.5)[(12.5)^2 + (7.5)^2 - (12.5 × 7.5)]}{(12.5)^2 + (7.5)^2 - 12.5 \times 7.5}$

⇒ 12.5 + 7.5 

⇒ 20

∴ Option 3 will be the correct answer.

Given :

By adding 3 and 5 in the numerator and denominator a fraction becomes 2/3. 

By subtracting 1 from the numerator and adding 3 in the denominator fraction will become 2/5. 

Calculations :

Let the fraction be 'x/y'

According to the question 

(x + 3)/(y + 5) = 2/3 

⇒ 3x - 2y = 1      ....(1) 

Again 

(x - 1)/(y + 3) = 2/5 

⇒ 5x - 2y = 11      ....(2) 

Solving equation 1 and 2 

We get, x = 5 and y = 7 

Fraction = x/y 

⇒ 5/7 

∴ Option 3 will be the correct answer.

Given :

The radii of two circles are 20 cm and 13 cm, respectively.

Formula used :

Circumference of the circle = 2π radius 

Calculations :

Let the radius of the bigger circle be R cm 

Circumference of bigger circle = 2π R 

Circumference of circle (radius = 20 cm) = 2π × 20 = 40π 

Circumference of circle (radius = 13 cm) = 2π × 13 = 26π 

According to the question 

2π R = 40π + 26π 

⇒ R = 20 + 13 

⇒ R = 33 cm 

∴ Option 3 will be the correct answer.

Given :

x = cosecA + cosA and y = cosec A - cosA

Formula used :

sin² θ + cos² θ = 1 

Calculations :

x + y = cosecA + cosA + cosec A - cosA

⇒ 2cosecA 

x - y = cosecA + cosA  - (cosec A - cosA)

⇒ 2cosA 

[2/(x + y)]² = [2/(2cosecA)]² = sin²A 

[(x - y)/2]² = [2cosA/2]² = cos²A

So, 

[2/(x + y)]² + [(x - y)/2]² - 1 = sin²A + cos²A - 1 

⇒ 1 - 1 

⇒ 0 

∴ Correct choice will be option 4.

Formula used :

sin² θ = 1 - cos² θ 

Calculations :

2sin² x + √3cos x + 1 = 2( 1 - cos² x) + √3cos x + 1 

⇒ 2 - 2 cos² x + √3cos x + 1 = 0 

⇒  2 cos2 x - √3cos x - 3 = 0 

⇒  2 cos2 x - 2√3cos x +  √3cos x - 3 = 0

⇒ 2 cos x(cos x - √3) + √3 (cos x - √3) = 0 

⇒ cos x = -(√3/2) or cos x = √3 

⇒ cos x = -(√3/2)     (cos x = √3 is not possible)

⇒ x = 150° or (5π/6) 

∴ Option 1 will be the correct choice.

The correct answer is Football.

Key Points

• Santosh Trophy
• It is a domestic football knock-out competition contested by the regional state associations and government institutions under the All India Football Federation.
• It was started in 1941.
• Most Successful Team: West Bengal( 32 titles)
• All India Football Federation
• Headquarters: Dwarka, Delhi
• President: Praful Patel
• FIFA World Cup
• It is an international football competition held after every four years.
• It was started in 1930.
• Most Successful Team: Brazil( 5 times)
• Current Champion: France
• Qatar will host the 2022 FIFA World Cup.
• FIFA
• Headquarters: Zurich, Switzerland
• President: Gianni Infantino

Additional Information

The correct answer is Amylase**.**

Key Points

• Enzyme
• Enzymes are proteins that act as biological catalysts.
• Enzymes increase the reaction rate by lowering its activation energy.
• The study of enzymes is called enzymology.
• Amylase
• It is an enzyme that catalyzes the hydrolysis of starch into sugars.
• All amylases are glycoside hydrolases.
• alpha and beta amylases are important in brewing beer and liquor made from sugars derived from starch.
• Amylases are used in breadmaking and to breakdown complex sugars, such as starch into simple sugars.
• Saccharides are a food source rich in energy.

Additional Information

• Protease
• A protease is an enzyme that catalyzes proteolysis.
• Protease occurs in all organisms from prokaryotes to eukaryotes to viruses.
• It is involved in many biological functions, including digestion of ingested proteins, protein catabolism, and cell signaling.
• Protease is used to make Paneer.
• Proteases are used in industry, medicine, and basic biological research.
• Lipase
• Lipase is an enzyme that catalyzes the hydrolysis of fats (lipids)
• Lipases perform essential roles in digestion transport and processing of dietary lipids.
• The main lipases of the human digestive system are pancreatic lipase and pancreatic lipase-related protein 2.
• Lipases are a subclass of the esterases.
• Peptidase
• It is an enzyme that breaks down peptides into amino acids.
• It is produced in the stomach, small intestine, and pancreas.

The correct answer is Economics.

Key Points

• Indian-American Economist Abhijit Banerjee has won the 2019 Nobel Prize in economics, along with Esther Duflo for " their experimental approach to alleviating global poverty"
• Nobel Prize
• It was started on December 10, 1901, in the honor of Alfred Nobel.
• It was awarded in the fields of physics, chemistry, medicine, literature, peace, and economics( started in 1968).
• All Noble Prizes was awarded in Stockholm, Sweden, except Nobel Peace Prize, which was awarded in Oslo, Norway.

 ​

Additional Information

The correct answer is Microeconomics.

Key Points

• Microeconomics
• It is the study of decisions made by people and businesses regarding the allocation of resources and prices at which they exchange goods and services.
• Tools of Microeconomics: Supply and Demand
• Objectives: It aims to determine the price of a commodity or factors of production
• It assumes all the macro variables to be constant i.e. assumes that national income, consumption, savings are constant.

Additional Information

• Macroeconomics
• It is that part of economic theory which studies the behavior of aggregates of the economy as a whole.
• Tools of Macroeconomics: Aggregate Supply and Aggregate Demand
• Objectives: It aims to determine the income and employment level of the economy
• It assumes all the micro variables to be constant i.e. decisions of households and firms, prices of individual products are constant.
• Econometrics
• It is the use of statistical methods using quantitative data to create theories or test in economics and finance
• Its objectives to provide numerical values to the parameters of economic relationships.
• Health Economics
• It is the part of economics applied to the health care topic.
• Its main objectives are to study how scarce resources are allocated among alternative uses for the care of sickness, maintenance, and improvement of health.

The correct answer is acid.

Key Points

• Acid
• Acids are substances that have a sour taste, have one or more replaceable hydrogen atoms, and turn blue litmus and methyl orange to red.
• Example: Hydrochloric acid, nitric acid, sulphuric acid, etc.
• Litmus:
• It is an indicator that shows a color change in the solution as the pH of the solution changes.
• It is used to identify whether a solution is acidic, basic, or neutral.

Additional Information

• Water
• It is vital for all known forms of life, even though it provides no calories or organic nutrients
• Its chemical formula is H₂O.
• A Ph of pure water is 7.
• An alkali
• Base or alkali turn red litmus to blue, methyl orange to yellow, and have a bitter taste.
• These solutions are soapy to touch.
• Example: Potassium Hydroxide, Magnesium Hydroxide, Sodium Hydroxide, etc.
• Saline
• Saline or salts are the compounds obtained by the reaction of acid and base, such reactions are called neutralization reactions.
• Example: Sodium Chloride, Potash alum, etc.

The correct answer is Ashoka.

Key Points

• Buddhism
• It is the world's fourth-largest religion.
• It was started by the Gautam Buddha.
• The sacred book of Buddhism is Tripitaka written in Pali Language.
• Ashoka
• He was the ruler of the Mauryan Dynasty.
• After the Kalinga war fought in 261 BC, he renounced war, developed the concept of dhamma.
• He promoted the spread of Buddhism in Asia.

Additional Information

• Samudragupta
• He was the ruler of the Gupta Dynasty.
• He was known as the Napoleon of India because of his great military conquests.
• His greatest achievement was the unification of India.
• Brihadratha
• He was the last ruler of the Mauryan Dynasty.
• He was killed by his general Pushyamintra Shunga who established the Sunga Empire.
• Chandragupta I 
• He was a king of the Gupta dynasty, who ruled in northern India.
• He assumed the title of Maharajadhiraja.

The correct answer is Kedar Jadhav.

Key Points

• Kedar Jadhav
• He is an Indian Cricketer who is a batting all-rounder.
• He plays for Maharashtra in Ranji Trophy.
• Sri Lankan Team
• It is a full member of the ICC with the test, ODI, T-20 international status.
• It won the 1996 50-50 world cup under the captaincy of Arjun Ranatunga.

Additional Information

• T20 World Cup
• 2021 Men's world cup host: India
• 2022 Men's world cup host: Australia
• 2023 Women's world cup host: South Africa
• 50-50 cricket World cup
• 2023 Men's world cup host: India
• 2022 Women's world cup host: New Zealand

The correct answer is Joule.

Key Points

• Energy
• Energy is measured as the capacity to do work.
• It is a scalar quantity.
• Its SI unit is Joule and CGS unit is Erg.
• There are different forms of energy:

1. Heat Energy: It is the energy by a body due to its temperature.
2. Internal Energy: The total energy possessed by a body by virtue of the particular configuration of its molecules and also their random motion is called internal energy.
3. Electrical Energy: The energy required to maintain the flow of current in an electric appliance is called electrical energy.
4. Chemical Energy: The energy absorbed or released during a chemical reaction is called chemical energy.
5. Nuclear Energy: The energy absorbed or released during a nuclear reaction is called nuclear energy.

Additional Information

The correct answer is Guru Angad.

Key Points

• Gurumukhi
• It is the name of the official script used in writing primarily Punjabi.
• It was invented by the Guru Angad.
• Its direction is from left to right.
• The primary scripture of Sikhism the Guru Granth Sahib is written in Gurmukhi.
• Guru Angad
• He was the second Guru of the ten Sikhs gurus of Sikhism.

Additional Information

• Guru Nanak was the founder of Sikhism and the first guru of Sikhism
• Guru Gobind Singh was the last guru of Sikhism.
• Guru Ram, the fourth guru founded the city of Amritsar.
• Guru Arjan, the fifth guru built the Golden Tempe and compiled the holy Granth Sahib.
• He was the first great martyr in Sikh History when he was executed under Jahangir's order.
• Guru Har Krishan Sahib, the eighth guru was the youngest guru. He became a guru when he was five
• Guru Tegh Bahadur was executed under Aurangzeb's orders.

The correct answer is Monitor.

Key Points

• To enter data into a computer, an input device is required.
• Input Device: It can be defined as an electromechanical device that allows the user to enter data into the computer for analysis and storage and to give commands to the computer.
• Example: Keyboard, Mouse, Scanner, etc.
• Output Device: It is any piece of computer hardware equipment used to communicate the results of data carried out by an information processing to the outside world.
• Example: Monitor, Printer, Plotter, etc.
• Monitor
• It is an output device.
• It is also known as the Visual Display Unit.
• The monitor is provided along with the computer to view the display result.

Additional Information 

• Scanner
• It is an optical input device and uses light as an input source to convert an image into an electronic form that can be stored on the computer.
• Keyboard
• It is one of the most common input devices.
• It is used to enter data or information, which may be in numeric form or alphabets form in a computer system.
• Mouse
• It is a small handheld device having two or three buttons on its upper side and also has a small wheel between the buttons which provides a means to input data and commands by selecting through moving an arrow.

The correct answer is Engineers India Limited.

Key Points

• Engineers India Limited
• It is a Navratna public sector undertaking of the Government of India.
• Headquarters: New Delhi
• Chairman: JC Nakra
• Maharatna Company​
• The company should have a turnover of more than Rs. 25000 crore for the last three years.
• The net worth of the company should be more than Rs. 15000 crore for the last three years.
• Currently, there are 12 Maharatna Companies.

Additional Information

• Steel Authority of India Limited
• It is a government-owned steel agency.
• Headquarters: New Delhi
• Chairman: Soma Mandal
• Coal India Limited
• It is an Indian government undertaking a coal mining and refining agency.
• Headquarters: Kolkata
• Chairman: Pramod Agarwal
• GAIL( India ) Limited
• It is a government agency, natural gas processing, and distribution entity.
• Headquarters: New Delhi
• Chairman: Manoj Jain

The correct answer is Bihar.

Key Points

• Buddhism
• It is the world's fourth-largest religion.
• It was started by the Gautam Buddha.
• Gautam Buddha gave four truths of life

1. The world is full of sorrow and misery.
2. The desire of human beings is the main cause of his sorrows.
3. If there are no desires there are no sorrows.
4. The desires can be conquered by Eight Fold Paths

• The sacred book of Buddhism is Tripitaka written in Pali Language.
• Eight-Fold Paths of Buddhism

1. Right Speech
2. Right Livelihood
3. Right Efforts
4. Right Thoughts
5. Right Actions
6. Right Remembrance
7. Right Concentration
8. Right Mindfulness

• Famous Buddhist sites in India: Vikramshila, Vadnagar, Sanchi, Kapilvastu, Kosambi, Dharamsala