UPSC Prelims 2021

General Studies Paper II (CSAT)

80 questions, 2 hours. Open a question for its answer and why.

1. Question 1 · Reading Comprehension

   

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

   aLow intensity light has more adverse effect on the plants as compared to high intensity light.

   bLight pollution can have a permanent adverse impact on an ecosystem.

   cWhite light is better for the flowering of plants as compared to the light of other colours.

   dProper intensity of light in an ecosystem is important not only for plants but for animals too.
2. Question 2 · Reading Comprehension

   

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

   1. 1.Sustainable production of India's cereal food grains is impossible without the diversity of pollinating animals.
   2. 2.Monoculture of horticultural crops hampers the survival of insects.
   3. 3.Pollinators become scarce in cultivated areas devoid of natural vegetation.
   4. 4.Diversity in insects induces diversity of plants.

   Which of the above assumptions is/are valid ?

   a1 only

   b2, 3 and 4 only

   c1 and 2 only

   d3 and 4 only
3. Question 3 · Reading Comprehension

   

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

   aDevelopment of regional climate models helps in choosing climate-smart agricultural practices.

   bHeavy dependence on groundwater resources can be reduced by adopting dry-land cropping systems.

   cClimate changes increase the criticality of water resources while simultaneously threatening it.

   dClimate changes cause the farmers to adopt unsustainable livelihoods and risky coping strategies.
4. Question 4 · Reading Comprehension

   

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

   1. 1.BPA may alter embryonic development in vivo.
   2. 2.Biochemical and cell-based assays are useful in finding out treatments for pollution-induced diseases.
   3. 3.Embryonic stem cells could serve as a model to evaluate the physiological effects of environmental pollutants.

   Which of the above assumptions are valid ?

   a1 and 2 only

   b2 and 3 only

   c1 and 3 only

   d1, 2 and 3
5. Question 5 · Basic Numeracy

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

   a1

   b3

   c7

   d9
6. Question 6 · Basic Numeracy

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

   a1

   b6

   c7

   d9
7. Question 7 · Basic Numeracy

   From January 1, 2021, the price of petrol (in Rupees per litre) on m^th 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 n^th 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 ?

   a21^st May

   b20^th May

   c19^th May

   d18^th May
8. Question 8 · Basic Numeracy

   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 ?

   aP = 12 + 50n

   bP = 50 + 12n

   cP = 50 (2)^(12n)

   dP = 50 (2)^(n/12)
9. Question 9 · Basic Numeracy

   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 ?

   a45%

   b40%

   c30%

   d20%
10. Question 10 · Logical Reasoning and Mental Ability

    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.

    1. StatementSome radios are mobiles. All mobiles are computers. Some computers are watches.
    2. Conclusion-ICertainly some radios are watches.
    3. Conclusion-IICertainly some mobiles are watches.

    Which one of the following is correct ?

    aOnly Conclusion-I

    bOnly Conclusion-II

    cBoth Conclusion-I and Conclusion-II

    dNeither Conclusion-I nor Conclusion-II
11. Question 11 · Reading Comprehension

    

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

    1. 1.Fig trees can often be keystone species in natural forests.
    2. 2.Fig trees can grow where other large woody species cannot grow.
    3. 3.Sacred trees can have a role in biodiversity conservation.
    4. 4.Fig trees have a role in the seed dispersal of other tree species.

    Which of the above assumptions is/are valid ?

    a1 and 2 only

    b3 only

    c2 and 4 only

    d1, 3 and 4 only
12. Question 12 · Reading Comprehension

    

    Consider the following :

    1. 1.Cover crops
    2. 2.Fertigation
    3. 3.Hydroponics
    4. 4.Mixed farming
    5. 5.Polyculture
    6. 6.Vertical farming

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

    a1, 4 and 5 only

    b2, 3, 4 and 5 only

    c1, 2, 3 and 6 only

    d4 and 6 only
13. Question 13 · Reading Comprehension

    

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

    aComputers are not completely safe.

    bCompanies producing the software do not take cyber security seriously.

    cStringent data security laws are needed.

    dThe present trend of communication technologies will affect our lives in future.
14. Question 14 · Reading Comprehension

    

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

    1. 1.People who are obsessed with personal hygiene tend to ignore the community hygiene.
    2. 2.Emergence of multi-drug resistant germs can be prevented by personal cleanliness.
    3. 3.Entry of the market in the domain of hygiene increases the risk of infectious diseases.
    4. 4.Scientific and micro-level interventions are not sufficient to bring down the burden of infectious diseases.
    5. 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 ?

    a1 and 2 only

    b3 and 4 only

    c4 and 5 only

    d1, 2 and 4 only
15. Question 15 · Logical Reasoning and Mental Ability

    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.

    1. StatementSome cats are almirahs. Some almirahs are chairs. All chairs are tables.
    2. Conclusion-ICertainly some almirahs are tables.
    3. Conclusion-IISome cats may not be chairs.

    Which one of the following is correct ?

    aOnly Conclusion-I

    bOnly Conclusion-II

    cBoth Conclusion-I and Conclusion-II

    dNeither Conclusion-I nor Conclusion-II
16. Question 16 · Basic Numeracy

    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 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 ?

    a4

    b5

    c6

    d7
17. Question 17 · Logical Reasoning and Mental Ability

    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 ?

    a13

    b14

    c15

    d16
18. Question 18 · Logical Reasoning and Mental Ability

    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 ?

    a20 km

    b25 km

    c30 km

    d35 km
19. Question 19 · Basic Numeracy

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

    a6

    b7

    c8

    d9
20. Question 20 · Logical Reasoning and Mental Ability

    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 ?

    aAn angle less than 45° South of East

    bAn angle less than 45° North of East

    cAn angle more than 45° South of East

    dAn angle more than 45° North of East
21. Question 21 · Reading Comprehension

    

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

    aIndia's energy decision-making process is ever more complex and interconnected.

    bIndia's energy and climate policy is heavily tuned to sustainable development goals.

    cIndia's energy and climate actions are not compatible with its broader social, economic and environmental goals.

    dIndia's energy decision-making process is straightforward supply-oriented and ignores the demand side.
22. Question 22 · Reading Comprehension

    

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

    aPeople should avoid consuming the products of animal farming.

    bFoods of animal origin should be replaced with foods of plant origin.

    cUsing antibiotics on animals should be banned.

    dAntibiotics should only be used to treat diseases.
23. Question 23 · Reading Comprehension

    

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

    1. 1.Oil producing countries are one of the reasons for high food prices.
    2. 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 ?

    a1 only

    b2 only

    cBoth 1 and 2

    dNeither 1 nor 2
24. Question 24 · Reading Comprehension

    

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

    1. 1.Rising GDP is essential for a country to be a developed country.
    2. 2.Rising GDP guarantees a reasonable distribution of income to all households.

    Which of the above assumptions is/are valid ?

    a1 only

    b2 only

    cBoth 1 and 2

    dNeither 1 nor 2
25. Question 25 · Logical Reasoning and Mental Ability

    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

    aQ and R

    bQ and U

    cQ and T

    dT and U
26. Question 26 · Logical Reasoning and Mental Ability

    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.

    a0

    b1

    c3

    d6
27. Question 27 · Logical Reasoning and Mental Ability

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

    7B	10A	3C
    3C	9B	6A
    10A	13C	?

    a9B

    b3A

    c3B

    d3C
28. Question 28 · Logical Reasoning and Mental Ability

    You are given two identical sequences in two rows :

    Sequence-I :	8	4	6	15	52·5	236·25
    Sequence-II :	5	A	B	C	D	E

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

    a2·5

    b5

    c9·375

    d32·8125
29. Question 29 · Basic Numeracy

    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. 1.They take 5 hours to meet.
    2. 2.They meet midway between A and B.

    Select the correct answer using the code given below :

    a1 only

    b2 only

    cBoth 1 and 2

    dNeither 1 nor 2
30. Question 30 · Basic Numeracy

    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 ?

    a2

    b3

    c4

    d5
31. Question 31 · Reading Comprehension

    

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

    aNo man can live without adhering to some religious denomination.

    bIt is the duty of everyone to propagate one's religious denomination.

    cReligious denominations tend to ignore the unity of man.

    dMen do not understand their own religious denomination.
32. Question 32 · Reading Comprehension

    

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

    aSeditions, wars and breach of the laws are inevitable in every dominion.

    bIt is not the people, but the sovereign who is responsible for all the problems of any dominion.

    cThat dominion is the best which pursues the aim of unity and has laws for good citizenship.

    dIt is impossible for men to establish a good dominion.
33. Question 33 · Reading Comprehension

    

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

    1. 1.Equality is a prerequisite for people to participate in the multiple transactions of society from a position of confidence.
    2. 2.Occurrence of inequality is detrimental to the survival of democracy.
    3. 3.Equal standing of all citizens is an idea that cannot actually be realised even in a democracy.
    4. 4.Right to equality should be incorporated into our values and day-to-day political vocabulary.

    Which of the above assumptions are valid ?

    a1 and 2 only

    b2 and 3 only

    c1 and 4 only

    d3 and 4 only
34. Question 34 · Reading Comprehension

    

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

    aHuman societies experiment with different forms of governments.

    bAny form of government tends to deteriorate by excess of its basic principle.

    cEducation of all citizens ensures a perfect, functional and sustainable democracy.

    dHaving a government is a necessary evil because tyranny is inherent in any form of government.
35. Question 35 · Basic Numeracy

    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

    a20

    b30

    c30 or less

    d30 or more
36. Question 36 · Basic Numeracy

    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. 1.S is always divisible by 74.
    2. 2.S is always divisible by 9.

    Select the correct answer using the code given below :

    a1 only

    b2 only

    cBoth 1 and 2

    dNeither 1 nor 2
37. Question 37 · Basic Numeracy

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

    Which of the above statements is/are correct ?

    a1 only

    b2 only

    cBoth 1 and 2

    dNeither 1 nor 2
38. Question 38 · Data Interpretation

    Consider two Statements and a Question :

    1. Statement-1Priya is 4 ranks below Seema and is 31^st from the bottom.
    2. Statement-2Ena is 2 ranks above Seema and is 37^th from the bottom.
    3. QuestionWhat 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 ?

    aStatement-1 alone is not sufficient to answer the Question

    bStatement-2 alone is not sufficient to answer the Question

    cEither Statement-1 alone or Statement-2 alone is sufficient to answer the Question

    dBoth Statement-1 and Statement-2 are required to answer the Question
39. Question 39 · Data Interpretation

    Consider two Statements and a Question :

    1. Statement-1Each of A and D is heavier than each of B, E and F, but none of them is the heaviest.
    2. Statement-2A is heavier than D, but is lighter than C.
    3. QuestionWho 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 ?

    aStatement-1 alone is sufficient to answer the Question

    bStatement-2 alone is sufficient to answer the Question

    cBoth Statement-1 and Statement-2 are required to answer the Question

    dNeither Statement-1 alone nor Statement-2 alone is sufficient to answer the Question
40. Question 40 · Logical Reasoning and Mental Ability

    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 13^th letter ?

    aN

    bT

    cH

    dI
41. Question 41 · Reading Comprehension

    

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

    aThe conceptions of what is right or wrong exist due to the formation of a state.

    bUnless a ruling authority decides as to what is right or wrong, no man would be morally right.

    cMan is inherently immoral and selfish in a natural state.

    dThe idea of what is right or wrong is necessary for the survival of human species.
42. Question 42 · Reading Comprehension

    

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

    1. 1.Too much globalization is not in the best interests of any country.
    2. 2.Modern technologies are increasingly blurring the economic borders.
    3. 3.Innovation and capital have impinged on the domain of the State.
    4. 4.Public policy of every country should focus on developing its own supply chains.
    5. 5.Geopolitics will have to reconcile to many ambiguities and uncertainties.

    Select the correct answer using the code given below :

    a1, 4 and 5 only

    b1, 2, 3 and 4 only

    c2, 3 and 5 only

    d1, 2, 3, 4 and 5
43. Question 43 · Reading Comprehension

    

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

    aLending by the banks should be closely monitored and regulated by the Central Government.

    bInterest rates should be kept low so as to induce banks to lend more, promote credit growth and thereby boost economic activity.

    cMerger of many banks into a few large banks alone is the long-term solution to make them viable and prevent their bad performance.

    dIndian banking system requires structural reforms as a long-term solution for bad loans problem.
44. Question 44 · Reading Comprehension

    

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

    aThe central bank cannot work independently of the Government.

    bGovernment should regulate financial markets and institutions closely.

    cMarket economy is not compatible with the socialist policies of the Government.

    dFinancial sector reforms are required for enhancing the economic welfare of the people.
45. Question 45 · Data Interpretation

    Consider the following Table :

    Player	Runs scored in the First Innings	Balls faced in the First Innings	Runs scored in the Second Innings	Balls faced in the Second Innings
    A	61	99	14	76
    B	05	12	50	85
    C	15	75	20	50
    D	13	55	12	50

    Who is the fastest run scorer in the Test Match ?

    aA

    bB

    cC

    dD
46. Question 46 · Logical Reasoning and Mental Ability

    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 ?

    aAll the villagers who have their own houses are literate.

    bSome villagers under 25 years of age are literate.

    cOnly half of the villagers who cultivate paddy are literate.

    dNo villager under 25 years of age has his own house.
47. Question 47 · Data Interpretation

    Consider two Statements and a Question :

    1. Statement-1The last day of the month is a Wednesday.
    2. Statement-2The third Saturday of the month was the seventeenth day.
    3. QuestionWhat day is the fourteenth of the given month ?

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

    aStatement-1 alone is sufficient to answer the Question

    bStatement-2 alone is sufficient to answer the Question

    cBoth Statement-1 and Statement-2 are required to answer the Question

    dNeither Statement-1 alone nor Statement-2 alone is sufficient to answer the Question
48. Question 48 · Logical Reasoning and Mental Ability

    Which day is 10^th October, 2027 ?

    aSunday

    bMonday

    cTuesday

    dSaturday
49. Question 49 · Logical Reasoning and Mental Ability

    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.

    1. Statement-1Some greens are blues.
    2. Statement-2Some blues are blacks.
    3. Conclusion-1Some greens are blacks.
    4. Conclusion-2No green is black.
    5. Conclusion-3All greens are blacks.
    6. Conclusion-4All blacks are greens.

    Which one of the following is correct ?

    aConclusion-1 and Conclusion-2 only

    bConclusion-2 and Conclusion-3 only

    cConclusion-3 and Conclusion-4 only

    dNeither Conclusion 1 nor 2 nor 3 nor 4
50. Question 50 · Logical Reasoning and Mental Ability

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

    a603

    b605

    c607

    d608
51. Question 51 · Reading Comprehension

    

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

    aEfficacy of universities would be better in online mode of conducting classroom tuition as compared to conventional method.

    bAvailability of higher education can be made easier and cheaper without diluting the content.

    cWe need not invest much in infrastructure related to higher education and yet develop better human and social capital.

    dPrivate sector institutions in higher education as well as coaching institutes can take advantage of this opportunity and thrive well.
52. Question 52 · Reading Comprehension

    

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

    aOur cities need to have well-defined administrative set-up with sufficient autonomy.

    bEver increasing population densities is a hindrance in our efforts to achieve sustainable development.

    cTo maintain and develop our cities we need to adopt sustainability related interventions.

    dPublic-Private Partnership mode of development is the viable long-term solution for the infrastructure and sustainability problems of India.
53. Question 53 · Basic Numeracy

    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 ?

    aA pencil costs more than a pen

    bThe price of a pencil is equal to that of a pen

    cThe price of a pen is two times the price of a pencil

    dThe price of a pen is three times the price of a pencil
54. Question 54 · Basic Numeracy

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

    a360

    b380

    c400

    d420
55. Question 55 · Basic Numeracy

    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 ?

    a₹ 420

    b₹ 360

    c₹ 300

    d₹ 270
56. Question 56 · Logical Reasoning and Mental Ability

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

    aDIDLHRSSX

    bBIDNHTSSX

    cBIDLHTSSX

    dDGFLIRUQZ
57. Question 57 · Logical Reasoning and Mental Ability

    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 ?

    aAt 7:00 hours

    bBetween 7:00 hours and 7:05 hours

    cAt 7:05 hours

    dBetween 7:05 hours and 7:10 hours
58. Question 58 · Basic Numeracy

    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 ?

    a9

    b13

    c27

    d43
59. Question 59 · Basic Numeracy

    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 ?

    a102

    b120

    c202

    d220
60. Question 60 · Basic Numeracy

    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 ?

    a1

    b2

    c5

    dCannot be determined due to insufficient data
61. Question 61 · Reading Comprehension

    

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

    1. 1.Modern democracies rely on the market forces to enable them to be welfare states.
    2. 2.Markets ensure sufficient economic growth necessary for democracies to be effective.
    3. 3.Government programmes are needed for those left behind in economic growth.

    Which of the above assumptions is/are valid ?

    a1 and 3 only

    b3 only

    c2 and 3 only

    d1, 2 and 3
62. Question 62 · Reading Comprehension

    

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

    aSchool curriculum is not compatible with the expectations of children and parents.

    bEmphasis on academic achievements does give time for development of personality and skills.

    cPreparing the children to be better citizens should be the responsibility of the education system.

    dTo be a better citizen, the present world order demands societal and life-coping skills in addition to academic content.
63. Question 63 · Basic Numeracy

    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 ?

    a1

    b2

    c3

    d4
64. Question 64 · Basic Numeracy

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

    a4

    b6

    c8

    d12
65. Question 65 · Logical Reasoning and Mental Ability

    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.

    abababa

    bbaabba

    cbbaabb

    dababab
66. Question 66 · Basic Numeracy

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

    a3

    b6

    c9

    d12
67. Question 67 · Basic Numeracy

    Consider the following statements :

    1. 1.The sum of 5 consecutive integers can be 100.
    2. 2.The product of three consecutive natural numbers can be equal to their sum.

    Which of the above statements is/are correct ?

    a1 only

    b2 only

    cBoth 1 and 2

    dNeither 1 nor 2
68. Question 68 · Basic Numeracy

    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) ?

    a1000

    b10000

    c100000

    d1000000
69. Question 69 · Basic Numeracy

    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 ?

    a3

    b4

    c5

    d6
70. Question 70 · Basic Numeracy

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

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

    Which of the above statements is/are correct ?

    a1 only

    b2 only

    cBoth 1 and 2

    dNeither 1 nor 2
71. Question 71 · Reading Comprehension

    

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

    aWealth generation is the primary motive for any human endeavour.

    bSpace, whether space in solar system or interstellar space, will govern our future economy.

    cHuman beings are motivated to explore new frontiers principally by economic considerations.

    dWealth generation is based on the risk-taking behaviour of some men.
72. Question 72 · Reading Comprehension

    

    The idea which the first part of the passage mentions is

    aagreement about telling lies.

    bdisagreement about telling lies.

    cdisagreement about telling the truth.

    ddisagreement about the harm in telling the truth.
73. Question 73 · Reading Comprehension

    

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

    aMixing up the true and false

    bIntentional mixing up of truth with the false

    cFalsification of facts

    dComplete concealment of truth
74. Question 74 · Data Interpretation

    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 ?

    a54°

    b96°

    c108°

    d120°
75. Question 75 · Basic Numeracy

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

    aMonday

    bWednesday

    cThursday

    dSunday
76. Question 76 · Basic Numeracy

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

    Which of the above statements is/are correct ?

    a1 only

    b2 only

    cBoth 1 and 2

    dNeither 1 nor 2
77. Question 77 · Basic Numeracy

    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. 1.8 years ago, the age of X was five times the age of Y.
    2. 2.After 14 years, the age of X would be two times the age of Y.

    Which of the above statements is/are correct ?

    a1 only

    b2 only

    cBoth 1 and 2

    dNeither 1 nor 2
78. Question 78 · Basic Numeracy

    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 ?

    a0%

    b5% increase

    c5% decrease

    dCannot be determined due to insufficient data
79. Question 79 · Basic Numeracy

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

    a15713

    b15723

    c15783

    d15873
80. Question 80 · Basic Numeracy

    A man completes 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% ?

    a24

    b21

    c18

    d15

Source: UPSC, Civil Services (Preliminary) Examination 2021, General Studies Paper II (CSAT), Series A. The paper on upsc.gov.in.