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MCQ SUBJECT

CSAT

29 UPSC Prelims MCQs tagged "CSAT". Free practice with answer keys, explanations, and timed mock tests on Anantam IAS.

Indian Economy 256 Environment 249 Indian Polity 240 Science & Technology 192 History 184 International Relations 104 Art & Culture 94 Geography 82 Indian Geography 70 Indian Society 57 World Geography 36 CSAT 29 Science & Tech 22 Art and Culture 8 Current Affairs 6 General Studies 4

  3. To understand inclination of students towards various subjects, three students are asked to give…

    To understand inclination of students towards various subjects, three students are asked to give their preference for three subjects: Mathematics, Science and History. Each student either preferred or did not prefer each subject. Two students selected History, one student selected Science, two students selected Mathematics. Student 1 does not select Mathematics and Science. Student 2 selects subjects except Science. Student 3 does not select History. Which of the following statements is true?

    1. AStudent 1 selected Mathematics
    2. BStudent 3 selected Science and History
    3. CStudent 2 selected Mathematics and History
    4. DNone of the above
    Answer and explanation

    Correct answer: C

    Since only one student took Science and neither Student 1 nor Student 2 could, Science goes to Student 3. History needs two takers but Student 3 cannot, so History goes to Students 1 and 2. Mathematics needs two takers but Student 1 cannot, so Maths goes to Students 2 and 3. That leaves Student 1 with History only, Student 2 with Maths and History, and Student 3 with Science and Maths, which makes option (c) true.

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    CSAT UPSC GPSC-2026 Medium

  4. To understand inclination of students towards various subjects, three students are asked to give…

    To understand inclination of students towards various subjects, three students are asked to give their preference for three subjects: Mathematics, Science and History. Each student either preferred or did not prefer each subject. Two students selected History, one student selected Science, two students selected Mathematics. Student 1 does not select Mathematics and Science. Student 2 selects subjects except Science. Student 3 does not select History. Which of the following statements is false?

    1. AStudent 1 and Student 2 both selected Mathematics
    2. BStudent 2 selected History and Student 3 selected Science
    3. CStudent 1 selected History and Student 3 selected Mathematics
    4. DStudent 2 selected Mathematics and History
    Answer and explanation

    Correct answer: A

    From the same deduction, the final allotment is Student 1 = History, Student 2 = Maths and History, Student 3 = Science and Maths. Student 1 never takes Mathematics, so the claim that Students 1 and 2 both selected Mathematics is false. Options (b), (c) and (d) all match the valid allotment and are true.

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    CSAT UPSC GPSC-2026 Medium

  7. In a company there are 200 employees: 40% in marketing, 30% in IT and…

    In a company there are 200 employees: 40% in marketing, 30% in IT and the rest in production. 20% of IT males work part time, 70% of marketing males work full time and 5% of production males work part time. What is the total number of male employees working in full-time mode?

    1. A50
    2. B100
    3. C125
    4. D200
    Answer and explanation

    Correct answer: C

    Defective question — the same gap as the previous item: the number of male employees in marketing isn't given, so the count of full-time male employees can't be fixed. The keyed working also produces 124.7 rounded to (C) 125, which isn't clean for an employee count. Treat as defective.

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    CSAT UPSC GPSC-2026 Hard

  8. In a company there are 200 employees: 40% are in marketing, 30% in IT…

    In a company there are 200 employees: 40% are in marketing, 30% in IT and the rest in production. In the IT department 40% are female and in the production department 30% are female. What is the total number of female employees?

    1. A30
    2. B42
    3. C50
    4. D62
    Answer and explanation

    Correct answer: B

    Defective question. Finding the number of female employees needs the count of FEMALE employees in marketing, which the data never gives — the keyed answer (B) 42 only follows if you assume every marketing employee is male, an assumption the question doesn't state. Without that figure the total can't be determined, so the item should be treated as defective.

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    CSAT UPSC GPSC-2026 Medium

  9. Working at an equal rate, 5 employees can complete a total of 150 tasks…

    Working at an equal rate, 5 employees can complete a total of 150 tasks in a year. How many tasks could 12 employees complete in 3 years?

    1. A1080
    2. B2122
    3. C3500
    4. D4375
    Answer and explanation

    Correct answer: A

    If 5 employees finish 150 tasks in a year, each employee completes 30 tasks per year. So 12 employees complete 360 tasks in one year, and over 3 years that's 360 times 3, which equals 1080 tasks.

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    CSAT UPSC GPSC-2026 Easy

  11. Six people – K, M, N, P, Q and R are sitting around a…

    Six people - K, M, N, P, Q and R are sitting around a circular table facing the centre. Who sits to the immediate right of K?

    1. AData in Statement I alone is sufficient to answer the question while data in Statement II is not.
    2. BEither data in Statement I or Statement II is sufficient to answer the question.
    3. CData in statements I and II together are sufficient to answer the question.
    4. DData in Statement II alone is sufficient to answer the question while data in Statement I is not.
    Answer and explanation

    Correct answer: B

    Statement I fixes K with N two seats away and R to N's immediate left, which forces R into the seat to K's immediate right, so it is sufficient alone. Statement II independently fixes the arrangement as Q, P, K, R, N, M, again placing R to K's immediate right, so it too is sufficient alone. Since either statement alone answers the question, the answer is B.

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    CSAT UPSC GPSC-2026 Hard

  12. Out of the following four alternatives, only one is correct according to the above…

    Out of the following four alternatives, only one is correct according to the above letter symbols. Identify the correct answer.

    1. A2 Z 2 A 4 O 1 A 4 M 8
    2. B8 Y 2 A 3 A 4 Q 2 A 4
    3. C10 X 2 O 2 4 4 O 1 M 2
    4. D12 X 4 O 2 Q 1 A 4 A 2
    Answer and explanation

    Correct answer: A

    Substituting the symbols (Z=<, A=×, O=+, M=-) option A reads 2 < 2×4 + 1×4 - 8, which is 2 48 (false), option C is malformed, and option D gives 12 = 20 (false). Only A is valid.

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    CSAT UPSC GPSC-2026 Hard

  13. Out of the following four alternatives, only one is correct according to the above letter symbols.…

    Out of the following four alternatives, only one is correct according to the above letter symbols. Identify the correct answer.

    1. A10 1 Q 1 M 1 Y 3 Q 1
    2. B2 Q 1 O 10 A 1 Z 6 A 4
    3. C3 O 2 O 10 Q 2 X 10 A 2
    4. D5 Q 5 A 5 O 5 Y 5 A 2
    Answer and explanation

    Correct answer: B

    Substituting the symbols (Q=÷, O=+, A=×, Z=<) option B reads 2÷1 + 10×1 < 6×4, which is 2 + 10 = 12 10 (false). Only B is valid.

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    CSAT UPSC GPSC-2026 Hard

  14. After arranging the given words according to dictionary order, which word will come at…

    After arranging the given words according to dictionary order, which word will come at the 'Fifth' position?

    1. APopulation
    2. BPoppy
    3. CPopular
    4. DPopulace
    Answer and explanation

    Correct answer: A

    Sorting all five words alphabetically gives: Pope, Poppy, Populace, Popular, Population. After "pop", the fourth letter orders them as e < p < u, then within "popul" the next letter c < r < t fixes Populace, Popular, Population. So the fifth word is Population.

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    CSAT UPSC GPSC-2026 Easy

  15. Seven friends, Manashvi, Prince, Pratham, Trushil, Mahima, Prishiv and Naitik are sitting around a…

    Seven friends, Manashvi, Prince, Pratham, Trushil, Mahima, Prishiv and Naitik are sitting around a circular table with their backs towards the centre. Manashvi is sitting to the immediate right of Prince. Naitik and Prishiv are not sitting to the immediate left or right of Trushil. Trushil is sitting third to the left of Prince. Mahima is sitting to the immediate right of Trushil. Who is sitting third to the right of Prince?

    1. ANaitik
    2. BPratham
    3. CMahima
    4. DPrishiv
    Answer and explanation

    Correct answer: B

    With backs to the centre, right means clockwise and left anticlockwise. Fixing Prince and placing Manashvi to his right, Trushil third to his left, and Mahima to Trushil's right leaves the immediate left of Trushil open; since Naitik and Prishiv are barred from sitting beside Trushil, that seat must be Pratham. That seat is exactly third to the right of Prince.

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    CSAT UPSC GPSC-2026 Hard

  16. DRIVEN is related to EIDRVN in the same way as BEGUMF is related to:

    DRIVEN is related to EIDRVN in the same way as BEGUMF is related to:

    1. ABGMEFU
    2. BBGMUEF
    3. CGMBEUF
    4. DMGBEUF
    Answer and explanation

    Correct answer: D

    In DRIVEN the letters occupy positions 1-6 as D-R-I-V-E-N; the output EIDRVN rearranges them by picking original positions in the order 5,3,1,2,4,6. Applying the same order to BEGUMF (B1-E2-G3-U4-M5-F6) gives M-G-B-E-U-F, that is MGBEUF.

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    CSAT UPSC GPSC-2026 Medium

  17. It was Saturday on 12 December, 1342. What was the day on 24 August,…

    It was Saturday on 12 December, 1342. What was the day on 24 August, 1342?

    1. ATuesday
    2. BMonday
    3. CSunday
    4. DFriday
    Answer and explanation

    Correct answer: B

    Count the days from 24 August to 12 December within 1342: 7 (rest of August) + 30 (Sep) + 31 (Oct) + 30 (Nov) + 12 (Dec) = 110 days. 110 divided by 7 leaves a remainder of 5, so 12 December falls 5 weekdays ahead of 24 August. Working back 5 days from Saturday gives Monday.

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    CSAT UPSC GPSC-2026 Medium

  18. A situation is given followed by two conclusions I and II. Read the situation…

    A situation is given followed by two conclusions I and II. Read the situation and both the conclusions carefully and select the correct answer.

    1. ANeither I nor II can be concluded.
    2. BOnly II can be concluded.
    3. COnly I can be concluded.
    4. DBoth I and II can be concluded.
    Answer and explanation

    Correct answer: A

    Conclusion I assumes the falling employment still leaves enough potters for equal market contribution, but the situation gives no basis for that forward assurance, so it cannot be concluded. Conclusion II blames a drop in local demand, yet the passage speaks only of world market share and employment and says nothing about domestic demand, so it cannot be concluded either. Neither conclusion follows.

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    CSAT UPSC GPSC-2026 Medium

  19. If 4 x 6 = 1812 and 6 x 9 = 2718, then 7…

    If 4 x 6 = 1812 and 6 x 9 = 2718, then 7 x 6 = ?

    1. A1821
    2. B2428
    3. C3035
    4. D3642
    Answer and explanation

    Correct answer: A

    Each operand is multiplied by 3, and the two results are written together with the second operand's value first. For 4 x 6, the second operand 6 gives 18 and the first operand 4 gives 12, making 1812. For 6 x 9, 9 gives 27 and 6 gives 18, making 2718. For 7 x 6, the second operand 6 gives 18 and the first operand 7 gives 21, so the answer is 1821.

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    CSAT UPSC GPSC-2026 Medium

  20. In a certain code language, 781 means ‘Flowers of beautiful’, 612 means ‘Roses are…

    In a certain code language, 781 means 'Flowers of beautiful', 612 means 'Roses are red', and 982 means 'Roses are beautiful'. Which number denotes 'Flowers'?

    1. A8
    2. B7
    3. C2
    4. D6
    Answer and explanation

    Correct answer: B

    Codes 781 and 982 share the word 'beautiful' and the digit 8, so 8 = beautiful. Codes 612 and 982 share the words 'Roses' and 'are' and the digit 2. In 781 = 'Flowers of beautiful', once 8 is beautiful, the remaining digits 7 and 1 stand for 'Flowers' and 'of'. The digit 7 appears only in this code, so it maps to the word unique here, 'Flowers'.

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    CSAT UPSC GPSC-2026 Medium

  21. In a certain code language, 781 means ‘Flowers of beautiful’, 612 means ‘Roses are…

    In a certain code language, 781 means 'Flowers of beautiful', 612 means 'Roses are red', and 982 means 'Roses are beautiful'. What does the number '9' denote?

    1. ARoses
    2. BFlowers
    3. CRed
    4. Dare
    Answer and explanation

    Correct answer: A

    From 781 and 982 the shared word 'beautiful' fixes 8 = beautiful. Codes 612 ('Roses are red') and 982 ('Roses are beautiful') share 'are', which maps to the common digit 2, so 2 = are. In 982 the remaining digit after beautiful (8) and are (2) is 9, which therefore stands for 'Roses'.

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    CSAT UPSC GPSC-2026 Medium

  22. In this question, two statements I and II are given. These statements may be…

    In this question, two statements I and II are given. These statements may be independent causes, or effects of independent causes, or one may be the effect of the other. Read both statements and select the correct answer.

    1. AII is the cause and I is its possible effect.
    2. BI is the cause and II is its possible effect.
    3. CBoth I and II are effects of independent causes.
    4. DBoth I and II are independent causes.
    Answer and explanation

    Correct answer: C

    Lowering the entrance cut-off from 60 to 50 relates to admissions, while the Students Union's two-year negotiation about canteen food and hygiene relates to campus welfare. There's no logical link making one cause the other, so neither is the effect of the other. They arise from separate, unrelated causes, making them effects of independent causes.

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    CSAT UPSC GPSC-2026 Medium

  23. The sum of 30 observations is 910. If one of the observations is taken…

    The sum of 30 observations is 910. If one of the observations is taken as -25 instead of 25, find the correct mean.

    1. A30
    2. B29
    3. C32
    4. D29.5
    Answer and explanation

    Correct answer: C

    The wrong sum is 910 because one value was recorded as -25 instead of +25, an error of 50. Adding the difference back gives the correct sum of 910 + 50 = 960. Dividing by 30 observations gives a correct mean of 960 / 30 = 32.

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    CSAT UPSC GPSC-2026 Easy

  24. Consider the following statements:

    Consider the following statements:

    1. AOnly 1
    2. BOnly 2
    3. CBoth 1 and 2
    4. DNeither 1 nor 2
    Answer and explanation

    Correct answer: C

    Papeete (150 W) is at UTC-10 and Port Moresby (150 E) is at UTC+10, a 20-hour gap. For statement 1, departing Papeete 4 p.m. Monday converts to 02:00 Tuesday UTC, and arriving Port Moresby 6 a.m. Wednesday is 20:00 Tuesday UTC, giving an 18-hour flight. For statement 2, departing Port Moresby noon Wednesday is 02:00 Wednesday UTC, and arriving Papeete 11 a.m. Wednesday is 21:00 Wednesday UTC, a 19-hour flight. Both are internally consistent.

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    CSAT UPSC GPSC-2026 Hard

  25. A charity kitchen has grain to serve 200 people for 40 days. If 50…

    A charity kitchen has grain to serve 200 people for 40 days. If 50 people leave after 10 days, how long from now would the grain last?

    1. A30 days
    2. B40 days
    3. C50 days
    4. D36 days
    Answer and explanation

    Correct answer: B

    Total stock equals 200 x 40 = 8000 person-days. In the first 10 days, 200 people consume 200 x 10 = 2000 person-days, leaving 6000 person-days. With 50 people gone, 150 remain, so the grain lasts 6000 / 150 = 40 more days from that point.

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    CSAT UPSC GPSC-2026 Medium

  26. Based on the family photo album described, Dakshit is Sunita’s:

    Based on the family photo album described, Dakshit is Sunita's:

    1. ABrother
    2. BSon
    3. CHusband
    4. DNephew
    Answer and explanation

    Correct answer: B

    Meera's grandfather has only two sons, Jayesh and Vijay, and no daughters. Dakshit is the grandfather's only grandson. Meera's mother Sheetal is married to Jayesh (Vijay is her brother-in-law), and their daughters are Meera and Mamta. So the only grandson Dakshit must be the child of Vijay and his wife Sunita, which makes Dakshit Sunita's son.

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    CSAT UPSC GPSC-2026 Medium

  28. Based on the family photo album described, how many children are there in the…

    Based on the family photo album described, how many children are there in the third generation (to which Meera belongs)?

    1. ATwo
    2. BThree
    3. CFour
    4. DOne
    Answer and explanation

    Correct answer: B

    The third generation consists of the grandfather's grandchildren. Jayesh and Sheetal have two daughters, Meera and Mamta, while Vijay and Sunita have the only grandson, Dakshit. That gives three children in Meera's generation.

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    CSAT UPSC GPSC-2026 Medium