2021

Q1

Which one of the following statements best reflects the most critical inference that can be made from the passage given above?

1. (a)Low intensity light has more adverse effect on the plants as compared to high intensity light.
2. (b)Light pollution can have a permanent adverse impact on an ecosystem.UPSC key
3. (c)White light is better for the flowering of plants as compared to the light of other colours.
4. (d)Proper intensity of light in an ecosystem is important not only for plants but for animals too.

Q2

On the basis of the passage given above, the following assumptions have been made:

1.Sustainable production of India's cereal food grains is impossible without the diversity of pollinating animals.

2.Monoculture of horticultural crops hampers the survival of insects.

3.Pollinators become scarce in cultivated areas devoid of natural vegetation.

4.Diversity in insects induces diversity of plants.

Which of the above assumptions is/are valid?

1. (a)1 only
2. (b)2, 3 and 4 only
3. (c)1 and 2 only
4. (d)3 and 4 onlyUPSC key

Q3

Which one of the following statements best reflects the crux of the passage given above?

1. (a)Development of regional climate models helps in choosing climate-smart agricultural practices.
2. (b)Heavy dependence on groundwater resources can be reduced by adopting dry-land cropping systems.
3. (c)Climate changes increase the criticality of water resources while simultaneously threatening it.UPSC key
4. (d)Climate changes cause the farmers to adopt unsustainable livelihoods and risky coping strategies.

Q4

On the basis of the passage given above, the following assumptions have been made:

1.BPA may alter embryonic development in vivo.

2.Biochemical and cell-based assays are useful in finding out treatments for pollution-induced diseases.

3.Embryonic stem cells could serve as a model to evaluate the physiological effects of environmental pollutants.

Which of the above assumptions are valid?

1. (a)1 and 2 only
2. (b)2 and 3 only
3. (c)1 and 3 onlyUPSC key
4. (d)1, 2 and 3

Q5

If $3^{2019}$ is divided by 10, then what is the remainder?

1. (a)1
2. (b)3
3. (c)7UPSC key
4. (d)9

Q6

The number 3798125P369 is divisible by 7. What is the value of the digit P?

1. (a)1
2. (b)6UPSC key
3. (c)7
4. (d)9

Q7

From January 1, 2021, the price of petrol (in Rupees per litre) on mᵗʰ day of the year is 80 + 0·1m, where m = 1, 2, 3, ..., 100 and thereafter remains constant. On the other hand, the price of diesel (in Rupees per litre) on nᵗʰ day of 2021 is 69 + 0·15n for any n. On which date in the year 2021 are the prices of these two fuels equal?

1. (a)21st May
2. (b)20th MayUPSC key
3. (c)19th May
4. (d)18th May

Q8

A biology class at high school predicted that a local population of animals will double in size every 12 years. The population at the beginning of the year 2021 was estimated to be 50 animals. If P represents the population after n years, then which one of the following equations represents the model of the class for the population?

1. (a)P = 12 + 50n
2. (b)P = 50 + 12n
3. (c)P = 50 $(2)^{12n}$
4. (d)P = 50 $(2)^{n}$/¹²UPSC key

Q9

In a class, 60% of students are from India and 50% of the students are girls. If 30% of the Indian students are girls, then what percentage of foreign students are boys?

1. (a)45%
2. (b)40%
3. (c)30%
4. (d)20%UPSC key

Q10

A Statement followed by Conclusion-I and Conclusion-II is given below. You have to take the Statement to be true even if it seems to be at variance from the commonly known facts. Read all Conclusions and then decide which of the given Conclusion(s) logically follows/follow from the Statement, disregarding the commonly known facts.

Statement: Some radios are mobiles. All mobiles are computers. Some computers are watches.

Conclusion-I: Certainly some radios are watches.

Conclusion-II: Certainly some mobiles are watches.

Which one of the following is correct?

1. (a)Only Conclusion-I
2. (b)Only Conclusion-II
3. (c)Both Conclusion-I and Conclusion-II
4. (d)Neither Conclusion-I nor Conclusion-IIUPSC key

Q11

On the basis of the passage given above, the following assumptions have been made:

1.Fig trees can often be keystone species in natural forests.

2.Fig trees can grow where other large woody species cannot grow.

3.Sacred trees can have a role in biodiversity conservation.

4.Fig trees have a role in the seed dispersal of other tree species.

Which of the above assumptions is/are valid?

1. (a)1 and 2 only
2. (b)3 only
3. (c)2 and 4 only
4. (d)1, 3 and 4 onlyUPSC key

Q12

Consider the following:

1.Cover crops

2.Fertigation

3.Hydroponics

4.Mixed farming

5.Polyculture

6.Vertical farming

Which of the above farming practices can be compatible with agroecology, as implied by the passage?

1. (a)1, 4 and 5 onlyUPSC key
2. (b)2, 3, 4 and 5 only
3. (c)1, 2, 3 and 6 only
4. (d)4 and 6 only

Q13

Which one of the following statements best reflects the most critical inference that can be made from the passage given above?

1. (a)Computers are not completely safe.UPSC key
2. (b)Companies producing the software do not take cyber security seriously.
3. (c)Stringent data security laws are needed.
4. (d)The present trend of communication technologies will affect our lives in future.

Q14

On the basis of the passage given above, the following assumptions have been made:

1.People who are obsessed with personal hygiene tend to ignore the community hygiene.

2.Emergence of multi-drug resistant germs can be prevented by personal cleanliness.

3.Entry of the market in the domain of hygiene increases the risk of infectious diseases.

4.Scientific and micro-level interventions are not sufficient to bring down the burden of infectious diseases.

5.It is community hygiene implemented through public health measures that is really effective in the battle against infectious diseases.

Which of the above assumptions are valid?

1. (a)1 and 2 only
2. (b)3 and 4 only
3. (c)4 and 5 onlyUPSC key
4. (d)1, 2 and 4 only

Q15

A Statement followed by Conclusion-I and Conclusion-II is given below. You have to take the Statement to be true even if it seems to be at variance from the commonly known facts. Read all Conclusions and then decide which of the given Conclusion(s) logically follows/follow from the Statement, disregarding the commonly known facts.

Statement: Some cats are almirahs. Some almirahs are chairs. All chairs are tables.

Conclusion-I: Certainly some almirahs are tables.

Conclusion-II: Some cats may not be chairs.

Which one of the following is correct?

1. (a)Only Conclusion-I
2. (b)Only Conclusion-II
3. (c)Both Conclusion-I and Conclusion-IIUPSC key
4. (d)Neither Conclusion-I nor Conclusion-II

Q16

A boy plays with a ball and he drops it from a height of 1·5 m. Every time the ball hits the ground, it bounces back to attain a height $\dfrac{4}{5}$ᵗʰ of the previous height. The ball does not bounce further if the previous height is less than 50 cm. What is the number of times the ball hits the ground before the ball stops bouncing?

1. (a)4
2. (b)5UPSC key
3. (c)6
4. (d)7

Q17

Images of consonants of the English alphabet (Capitals) are observed in a mirror. What is the number of images of these which do not look like their original shapes?

1. (a)13
2. (b)14UPSC key
3. (c)15
4. (d)16

Q18

A bank employee drives 10 km towards South from her house and turns to her left and drives another 20 km. She again turns left and drives 40 km, then she turns to her right and drives for another 5 km. She again turns to her right and drives another 30 km to reach her bank where she works. What is the shortest distance between her bank and her house?

1. (a)20 km
2. (b)25 kmUPSC key
3. (c)30 km
4. (d)35 km

Q19

Integers are listed from 700 to 1000. In how many integers is the sum of the digits 10?

1. (a)6
2. (b)7
3. (c)8
4. (d)9UPSC key

Q20

A woman runs 12 km towards her North, then 6 km towards her South and then 8 km towards her East. In which direction is she from her starting point?

1. (a)An angle less than 45° South of East
2. (b)An angle less than 45° North of EastUPSC key
3. (c)An angle more than 45° South of East
4. (d)An angle more than 45° North of East

Q21

Which one of the following statements best reflects the critical message conveyed by the passage given above?

1. (a)India's energy decision-making process is ever more complex and interconnected.UPSC key
2. (b)India's energy and climate policy is heavily tuned to sustainable development goals.
3. (c)India's energy and climate actions are not compatible with its broader social, economic and environmental goals.
4. (d)India's energy decision-making process is straightforward supply-oriented and ignores the demand side.

Q22

Which one of the following statements best reflects the critical message conveyed by the passage given above?

1. (a)People should avoid consuming the products of animal farming.
2. (b)Foods of animal origin should be replaced with foods of plant origin.
3. (c)Using antibiotics on animals should be banned.
4. (d)Antibiotics should only be used to treat diseases.UPSC key

Q23

With reference to the above passage, the following assumptions have been made:

1.Oil producing countries are one of the reasons for high food prices.

2.If there is a food crisis in the world in the near future, it will be in the emerging economies.

Which of the above assumptions is/are valid?

1. (a)1 only
2. (b)2 only
3. (c)Both 1 and 2
4. (d)Neither 1 nor 2UPSC key

Q24

With reference to the above passage, the following assumptions have been made:

1.Rising GDP is essential for a country to be a developed country.

2.Rising GDP guarantees a reasonable distribution of income to all households.

Which of the above assumptions is/are valid?

1. (a)1 only
2. (b)2 only
3. (c)Both 1 and 2
4. (d)Neither 1 nor 2UPSC key

Q25

Seven books P, Q, R, S, T, U and V are placed side by side. R, Q and T have blue covers and other books have red covers. Only S and U are new books and the rest are old. P, R and S are law reports; the rest are Gazetteers. Books of old Gazetteers with blue covers are

1. (a)Q and R
2. (b)Q and U
3. (c)Q and TUPSC key
4. (d)T and U

Q26

Replace the incorrect term by the correct term in the given sequence

3, 2, 7, 4, 13, 10, 21, 18, 31, 28, 43, 40

where odd terms and even terms follow the same pattern.

1. (a)0UPSC key
2. (b)1
3. (c)3
4. (d)6

Q27

Following is a matrix of certain entries. The entries follow a certain trend row-wise. Choose the missing entry (?) accordingly.

1. (a)9B
2. (b)3A
3. (c)3BUPSC key
4. (d)3C

Q28

You are given two identical sequences in two rows:

What is the entry in the place of C for the Sequence-II?

1. (a)2·5
2. (b)5
3. (c)9·375UPSC key
4. (d)32·8125

Q29

A person X from a place A and another person Y from a place B set out at the same time to walk towards each other. The places are separated by a distance of 15 km. X walks with a uniform speed of 1·5 km/hr and Y walks with a uniform speed of 1 km/hr in the first hour, with a uniform speed of 1·25 km/hr in the second hour and with a uniform speed of 1·5 km/hr in the third hour and so on.

Which of the following is/are correct?

1.They take 5 hours to meet.

2.They meet midway between A and B.

Select the correct answer using the code given below:

1. (a)1 only
2. (b)2 only
3. (c)Both 1 and 2UPSC key
4. (d)Neither 1 nor 2

Q30

A student appeared in 6 papers. The maximum marks are the same for each paper. His marks in these papers are in the proportion of 5: 6: 7: 8: 9: 10. Overall he scored 60%. In how many number of papers did he score less than 60% of the maximum marks?

1. (a)2
2. (b)3UPSC key
3. (c)4
4. (d)5

Q31

What is the most logical assumption that can be made from the passage given above?

1. (a)No man can live without adhering to some religious denomination.
2. (b)It is the duty of everyone to propagate one's religious denomination.
3. (c)Religious denominations tend to ignore the unity of man.UPSC key
4. (d)Men do not understand their own religious denomination.

Q32

Which among the following is the most logical and rational inference that can be made from the passage given above?

1. (a)Seditions, wars and breach of the laws are inevitable in every dominion.
2. (b)It is not the people, but the sovereign who is responsible for all the problems of any dominion.
3. (c)That dominion is the best which pursues the aim of unity and has laws for good citizenship.UPSC key
4. (d)It is impossible for men to establish a good dominion.

Q33

With reference to the above passage, the following assumptions have been made:

1.Equality is a prerequisite for people to participate in the multiple transactions of society from a position of confidence.

2.Occurrence of inequality is detrimental to the survival of democracy.

3.Equal standing of all citizens is an idea that cannot actually be realised even in a democracy.

4.Right to equality should be incorporated into our values and day-to-day political vocabulary.

Which of the above assumptions are valid?

1. (a)1 and 2 only
2. (b)2 and 3 only
3. (c)1 and 4 onlyUPSC key
4. (d)3 and 4 only

Q34

Which one of the following statements best reflects the crux of the passage given above?

1. (a)Human societies experiment with different forms of governments.
2. (b)Any form of government tends to deteriorate by excess of its basic principle.UPSC key
3. (c)Education of all citizens ensures a perfect, functional and sustainable democracy.
4. (d)Having a government is a necessary evil because tyranny is inherent in any form of government.

Q35

In a group of 120 persons, 80 are Indians and rest are foreigners. Further, 70 persons in the group can speak English. The number of Indians who can speak English is

1. (a)20
2. (b)30
3. (c)30 or less
4. (d)30 or moreUPSC key

Q36

Consider all 3-digit numbers (without repetition of digits) obtained using three non-zero digits which are multiples of 3. Let S be their sum.

Which of the following is/are correct?

1.S is always divisible by 74.

2.S is always divisible by 9.

Select the correct answer using the code given below:

1. (a)1 only
2. (b)2 only
3. (c)Both 1 and 2UPSC key
4. (d)Neither 1 nor 2

Q37

There are two Classes A and B having 25 and 30 students respectively. In Class-A the highest score is 21 and lowest score is 17. In Class-B the highest score is 30 and lowest score is 22. Four students are shifted from Class-A to Class-B.

Consider the following statements:

1.The average score of Class-B will definitely decrease.

2.The average score of Class-A will definitely increase.

Which of the above statements is/are correct?

1. (a)1 onlyUPSC key
2. (b)2 only
3. (c)Both 1 and 2
4. (d)Neither 1 nor 2

Q38

Consider two Statements and a Question:

Statement-1: Priya is 4 ranks below Seema and is 31ˢᵗ from the bottom.

Statement-2: Ena is 2 ranks above Seema and is 37ᵗʰ from the bottom.

Question: What is Seema's rank from the top in the class of 40 students?

Which one of the following is correct in respect of the Statements and the Question?

1. (a)Statement-1 alone is not sufficient to answer the Question
2. (b)Statement-2 alone is not sufficient to answer the Question
3. (c)Either Statement-1 alone or Statement-2 alone is sufficient to answer the QuestionUPSC key
4. (d)Both Statement-1 and Statement-2 are required to answer the Question

Q39

Consider two Statements and a Question:

Statement-1: Each of A and D is heavier than each of B, E and F, but none of them is the heaviest.

Statement-2: A is heavier than D, but is lighter than C.

Question: Who is the heaviest among A, B, C, D and E?

Which one of the following is correct in respect of the Statements and the Question?

1. (a)Statement-1 alone is sufficient to answer the Question
2. (b)Statement-2 alone is sufficient to answer the Question
3. (c)Both Statement-1 and Statement-2 are required to answer the QuestionUPSC key
4. (d)Neither Statement-1 alone nor Statement-2 alone is sufficient to answer the QuestionUPSC key

Q40

In the English alphabet, the first 4 letters are written in opposite order; and the next 4 letters are written in opposite order and so on; and at the end Y and Z are interchanged. Which will be the fourth letter to the right of the 13ᵗʰ letter?

1. (a)N
2. (b)TUPSC key
3. (c)H
4. (d)I

Q41

Which one of the following statements best reflects the central idea of the passage given above?

1. (a)The conceptions of what is right or wrong exist due to the formation of a state.UPSC key
2. (b)Unless a ruling authority decides as to what is right or wrong, no man would be morally right.
3. (c)Man is inherently immoral and selfish in a natural state.
4. (d)The idea of what is right or wrong is necessary for the survival of human species.

Q42

Which of the following statements best reflect the rational, plausible and practical implications that can be derived from the passage given above?

1.Too much globalization is not in the best interests of any country.

2.Modern technologies are increasingly blurring the economic borders.

3.Innovation and capital have impinged on the domain of the State.

4.Public policy of every country should focus on developing its own supply chains.

5.Geopolitics will have to reconcile to many ambiguities and uncertainties.

Select the correct answer using the code given below:

1. (a)1, 4 and 5 only
2. (b)1, 2, 3 and 4 only
3. (c)2, 3 and 5 onlyUPSC key
4. (d)1, 2, 3, 4 and 5

Q43

Which one of the following statements best reflects the most logical, rational and practical suggestion implied by the passage given above?

1. (a)Lending by the banks should be closely monitored and regulated by the Central Government.
2. (b)Interest rates should be kept low so as to induce banks to lend more, promote credit growth and thereby boost economic activity.
3. (c)Merger of many banks into a few large banks alone is the long-term solution to make them viable and prevent their bad performance.
4. (d)Indian banking system requires structural reforms as a long-term solution for bad loans problem.UPSC key

Q44

Which one of the following statements best reflects the corollary to the passage given above?

1. (a)The central bank cannot work independently of the Government.UPSC key
2. (b)Government should regulate financial markets and institutions closely.
3. (c)Market economy is not compatible with the socialist policies of the Government.
4. (d)Financial sector reforms are required for enhancing the economic welfare of the people.

Q45

Consider the following Table:

Who is the fastest run scorer in the Test Match?

1. (a)A
2. (b)BUPSC key
3. (c)C
4. (d)D

Q46

Half of the villagers of a certain village have their own houses. One-fifth of the villagers cultivate paddy. One-third of the villagers are literate. Four-fifth of the villagers are under 25 years of age. Which one of the following statements is certainly correct?

1. (a)All the villagers who have their own houses are literate.
2. (b)Some villagers under 25 years of age are literate.UPSC key
3. (c)Only half of the villagers who cultivate paddy are literate.
4. (d)No villager under 25 years of age has his own house.

Q47

Consider two Statements and a Question:

Statement-1: The last day of the month is a Wednesday.

Statement-2: The third Saturday of the month was the seventeenth day.

Question: What day is the fourteenth of the given month?

Which one of the following is correct in respect of the Statements and the Question?

1. (a)Statement-1 alone is sufficient to answer the Question
2. (b)Statement-2 alone is sufficient to answer the QuestionUPSC key
3. (c)Both Statement-1 and Statement-2 are required to answer the Question
4. (d)Neither Statement-1 alone nor Statement-2 alone is sufficient to answer the Question

Q48

Which day is 10ᵗʰ October, 2027?

1. (a)SundayUPSC key
2. (b)Monday
3. (c)Tuesday
4. (d)Saturday

Q49

Consider two Statements and four Conclusions given below. You have to take the Statements to be true even if they seem to be at variance from the commonly known facts. Read all Conclusions and then decide which of the given Conclusion(s) logically follows/follow from the Statements, disregarding the commonly known facts.

Statement-1: Some greens are blues.

Statement-2: Some blues are blacks.

Conclusion-1: Some greens are blacks.

Conclusion-2: No green is black.

Conclusion-3: All greens are blacks.

Conclusion-4: All blacks are greens.

Which one of the following is correct?

1. (a)Conclusion-1 and Conclusion-2 only
2. (b)Conclusion-2 and Conclusion-3 only
3. (c)Conclusion-3 and Conclusion-4 only
4. (d)Neither Conclusion 1 nor 2 nor 3 nor 4UPSC key

Q50

What is the value of 'X' in the sequence 2, 7, 22, 67, 202, X, 1822?

1. (a)603
2. (b)605
3. (c)607UPSC key
4. (d)608

Q51

Which one of the following statements best reflects the central idea of the passage given above?

1. (a)Efficacy of universities would be better in online mode of conducting classroom tuition as compared to conventional method.
2. (b)Availability of higher education can be made easier and cheaper without diluting the content.UPSC key
3. (c)We need not invest much in infrastructure related to higher education and yet develop better human and social capital.
4. (d)Private sector institutions in higher education as well as coaching institutes can take advantage of this opportunity and thrive well.

Q52

Which among the following is the most logical and rational inference that can be made from the passage given above?

1. (a)Our cities need to have well-defined administrative set-up with sufficient autonomy.
2. (b)Ever increasing population densities is a hindrance in our efforts to achieve sustainable development.
3. (c)To maintain and develop our cities we need to adopt sustainability related interventions.UPSC key
4. (d)Public-Private Partnership mode of development is the viable long-term solution for the infrastructure and sustainability problems of India.

Q53

Jay and Vijay spent an equal amount of money to buy some pens and special pencils of the same quality from the same store. If Jay bought 3 pens and 5 pencils, and Vijay bought 2 pens and 7 pencils, then which one of the following is correct?

1. (a)A pencil costs more than a pen
2. (b)The price of a pencil is equal to that of a pen
3. (c)The price of a pen is two times the price of a pencilUPSC key
4. (d)The price of a pen is three times the price of a pencil

Q54

P scored 40 marks more than Q in an examination. If Q scored 10% less marks than P, then how much did Q score?

1. (a)360UPSC key
2. (b)380
3. (c)400
4. (d)420

Q55

A person P asks one of his three friends X as to how much money he had. X replied, "If Y gives me ₹ 40, then Y will have half of as much as Z, but if Z gives me ₹ 40, then three of us will have equal amount." What is the total amount of money that X, Y and Z have?

1. (a)₹ 420
2. (b)₹ 360UPSC key
3. (c)₹ 300
4. (d)₹ 270

Q56

In a code language 'MATHEMATICS' is written as 'LBSIDNZUHDR'. How is 'CHEMISTRY' written in that code language?

1. (a)DIDLHRSSX
2. (b)BIDNHTSSXUPSC key
3. (c)BIDLHTSSX
4. (d)DGFLIRUQZ

Q57

At which one of the following times, do the hour hand and the minute hand of the clock make an angle of 180° with each other?

1. (a)At 7:00 hours
2. (b)Between 7:00 hours and 7:05 hours
3. (c)At 7:05 hours
4. (d)Between 7:05 hours and 7:10 hoursUPSC key

Q58

In an objective type test of 90 questions, 5 marks are allotted for every correct answer and 2 marks are deducted for every wrong answer. After attempting all the 90 questions, a student got a total of 387 marks. What is the number of incorrect responses?

1. (a)9UPSC key
2. (b)13
3. (c)27
4. (d)43

Q59

Consider the following addition problem:

3P + 4P + PP + PP = RQ2; where P, Q and R are different digits.

What is the arithmetic mean of all such possible sums?

1. (a)102
2. (b)120
3. (c)202UPSC key
4. (d)220

Q60

Consider the following multiplication problem:

(PQ) × 3 = RQQ, where P, Q and R are different digits and R ≠ 0.

What is the value of (P + R) ÷ Q?

1. (a)1
2. (b)2UPSC key
3. (c)5
4. (d)Cannot be determined due to insufficient data

Q61

With reference to the above passage, the following assumptions have been made:

1.Modern democracies rely on the market forces to enable them to be welfare states.

2.Markets ensure sufficient economic growth necessary for democracies to be effective.

3.Government programmes are needed for those left behind in economic growth.

Which of the above assumptions is/are valid?

1. (a)1 and 3 only
2. (b)3 onlyUPSC key
3. (c)2 and 3 only
4. (d)1, 2 and 3

Q62

Which one of the following statements best reflects the central idea of the passage given above?

1. (a)School curriculum is not compatible with the expectations of children and parents.
2. (b)Emphasis on academic achievements does give time for development of personality and skills.
3. (c)Preparing the children to be better citizens should be the responsibility of the education system.
4. (d)To be a better citizen, the present world order demands societal and life-coping skills in addition to academic content.UPSC key

Q63

There are three points P, Q and R on a straight line such that PQ: QR = 3: 5. If n is the number of possible values of PQ: PR, then what is n equal to?

1. (a)1
2. (b)2UPSC key
3. (c)3
4. (d)4

Q64

On a chess board, in how many different ways can 6 consecutive squares be chosen on the diagonals along a straight path?

1. (a)4
2. (b)6UPSC key
3. (c)8
4. (d)12

Q65

In the series _b_a_ba_b_abab_aab; fill in the six blanks ( _ ) using one of the following given four choices such that the series follows a specific order.

1. (a)bababa
2. (b)baabba
3. (c)bbaabb
4. (d)abababUPSC key

Q66

Using 2, 2, 3, 3, 3 as digits, how many distinct numbers greater than 30000 can be formed?

1. (a)3
2. (b)6UPSC key
3. (c)9
4. (d)12

Q67

Consider the following statements:

1.The sum of 5 consecutive integers can be 100.

2.The product of three consecutive natural numbers can be equal to their sum.

Which of the above statements is/are correct?

1. (a)1 only
2. (b)2 only
3. (c)Both 1 and 2UPSC key
4. (d)Neither 1 nor 2

Q68

A cubical vessel of side 1 m is filled completely with water. How many millilitres of water is contained in it (neglect thickness of the vessel)?

1. (a)1000
2. (b)10000
3. (c)100000
4. (d)1000000UPSC key

Q69

There are 6 persons arranged in a row. Another person has to shake hands with 3 of them so that he should not shake hands with two consecutive persons. In how many distinct possible combinations can the handshakes take place?

1. (a)3
2. (b)4UPSC key
3. (c)5
4. (d)6

Q70

An amount of money was distributed among A, B and C in the ratio p: q: r.

Consider the following statements:

1.A gets the maximum share if p is greater than (q + r).

2.C gets the minimum share if r is less than (p + q).

Which of the above statements is/are correct?

1. (a)1 onlyUPSC key
2. (b)2 only
3. (c)Both 1 and 2
4. (d)Neither 1 nor 2

Q71

Which one of the following statements best sums up the passage given above?

1. (a)Wealth generation is the primary motive for any human endeavour.
2. (b)Space, whether space in solar system or interstellar space, will govern our future economy.
3. (c)Human beings are motivated to explore new frontiers principally by economic considerations.UPSC key
4. (d)Wealth generation is based on the risk-taking behaviour of some men.

Q72

The idea which the first part of the passage mentions is

1. (a)agreement about telling lies.
2. (b)disagreement about telling lies.
3. (c)disagreement about telling the truth.
4. (d)disagreement about the harm in telling the truth.UPSC key

Q73

Which one of the following habits is found more often in good people?

1. (a)Mixing up the true and false
2. (b)Intentional mixing up of truth with the falseUPSC key
3. (c)Falsification of facts
4. (d)Complete concealment of truth

Q74

A pie diagram shows the percentage distribution of proteins, water and other dry elements in the human body. Given that proteins correspond to 16% and water corresponds to 70%. If both proteins and the other dry elements correspond to p%, then what is the central angle of the sector representing p on the pie diagram?

1. (a)54°
2. (b)96°
3. (c)108°UPSC key
4. (d)120°

Q75

Joseph visits the club on every 5ᵗʰ day, Harsh visits on every 24ᵗʰ day, while Sumit visits on every 9ᵗʰ day. If all three of them met at the club on a Sunday, then on which day will all three of them meet again?

1. (a)Monday
2. (b)WednesdayUPSC key
3. (c)Thursday
4. (d)Sunday

Q76

The difference between a 2-digit number and the number obtained by interchanging the positions of the digits is 54.

Consider the following statements:

1.The sum of the two digits of the number can be determined only if the product of the two digits is known.

2.The difference between the two digits of the number can be determined.

Which of the above statements is/are correct?

1. (a)1 only
2. (b)2 onlyUPSC key
3. (c)Both 1 and 2
4. (d)Neither 1 nor 2

Q77

X said to Y, "At the time of your birth I was twice as old as you are at present." If the present age of X is 42 years, then consider the following statements:

1.8 years ago, the age of X was five times the age of Y.

2.After 14 years, the age of X would be two times the age of Y.

Which of the above statements is/are correct?

1. (a)1 only
2. (b)2 onlyUPSC key
3. (c)Both 1 and 2
4. (d)Neither 1 nor 2

Q78

If the price of an article is decreased by 20% and then the new price is increased by 25%, then what is the net change in the price?

1. (a)0%UPSC key
2. (b)5% increase
3. (c)5% decrease
4. (d)Cannot be determined due to insufficient data

Q79

When a certain number is multiplied by 7, the product entirely comprises ones only (1111...). What is the smallest such number?

1. (a)15713
2. (b)15723
3. (c)15783
4. (d)15873UPSC key

Q80

A man completes $\dfrac{7}{8}$ of a job in 21 days. How many more days will it take him to finish the job if quantum of work is further increased by 50%?

1. (a)24
2. (b)21
3. (c)18
4. (d)15UPSC key