UPSC CSAT : September 2021

Tuesday 21 September 2021

UPSC CSAT 2022 MODEL QUESTIONS | CSAT 2023

1.Let A denotes the set of quadrilaterals having two diagonals equal and bisecting each other. Let B denotes the set of quadrilaterals having diagonals bisecting each other at 90. Then,  A ∩ B denotes

 (a) the set of parallelograms

 (b) the set of rhombuses

 (c) the set of squares

 (d) the set of rectangles

Ans: c

A= diagonal equal and bisecting each other.

A is square or rectangle. And B diagonal bisecting each other at 90°.

So, A ∪  B = the set of square


2. Out of 105 students taking an examination English and Mathematics, 80 students pass in English, 75 students fail students in both the subjects. How many students pass in only one subject?

 (a) 26

 (b) 30

 (c) 35

 (d) 45

Ans: d

Number of students failing in Mathematics= 105-75=30

Number of students tailing in English= 105-80=25

Number of students failing in 1 subject= (25+30) – 10= 45


3.If A and B are any two non-empty subsets of a set E, then what is A ∪ (A ∩ B) equal to?

 (a) A ∩ B

 (b) A ∪ B

 (c) A

 (d) B

Ans: C

Since, A and B are non-empty subsets of E.


∴A∪(A ∩ B) = A ∪( Shaded portion)= A


4. If A is a non- empty subset of a set E, then what is E∪(A ∩ Ø) – (A – Ø) equal to? E ∪(A∩Ø) equal to?

 (a) A

 (b) Complement of A

 (c) Ø

 (d) E

Ans: c

E ∪[(A ∩Ø) – ( A -Ø)]⇒E ∪[ Ø- A ]      [Because (A  ∩ Ø ) = fand (A – Ø)= A]

Here, A cannot be subtracted from f


5. Consider the following statements

Set of points of a given line is a finite set.

Intelligent students in a class is a set.

Good books in a school library is a set.

Which of the above statement(s) is/are not correct?


 (a) Only I

 (b) Both ll and III

 (c) Both I and II

 (d) I, II and III

Ans: d

The set of points of a given line is not a finite set

Here, we cannot decide, which students are intelligent

Here, we cannot decide, which books are good a school library

CSAT sample papers for prelims practice 2022 | UPSC CSAT2022 tips

  • Decision Making & Problem-Solving
  • Basic Numeracy (Class X Level)
  • Logical Reasoning & Analytical Ability
  • Interpersonal Skills including Communication Skills
  • General Mental Ability
  • Data Interpretation (Class X Level)
  •  Reading Comprehensions

Study the paragraph and answer the questions that follow:-

The most important reason for this state of affairs, perhaps, is that India was the only country in the world to truly recognise the achievements of the Soviet Union-rather than merely focus on the debilitating faults that Communism brought to its people. The people of India realised that the achievement of one hundred percent literacy in a country much, much larger than its own and with similarly complicated ethnic and religious groupings, the rapid industrialization of a nation that was a primarily agrarian society when the Bolshevik revolution took place in 1917, the attendant revolutionary steps in science and technology, the accessibility of health care (primeval according to Western standards, perhaps, but not according to Indian ones) to the general population, and despite prohibition of the government of the time the vast outpourings in literature, music, art, etc. are momentous and remarkable feats in any country. In contrast, all that the West focused on were the massive human rights violations by the Soviet State on its people, the deliberate uprooting and mass migrations of ethnic peoples from one part of the country to another in the name of industrialization, the end of religion. In short, all the tools of information were employed to condemn the ideology of Communism, so much at variance with capitalist thinking. The difference with the Indian perception, I think here is, that while the Indians reacted as negatively to what the Soviet governments did to its people in the name of good governance (witness the imprisonment of Boris Pasternak and the formation of an international committee to put pressure for his release with Jawaharlal Nehru at its head), they took the pain not to condemn the people of that broad country in black and white terms; they understood that mingled in the shades of grey were grains of uniqueness (The Russians have never failed that characteristic in themselves; they have twice experimented with completely different ideologies, Communism and Capitalism both in the space of a century).

1.Which of the following statements according to the passage is correct?

a. India took heed of the weak faults of Russian policies and systems.
b. The process of industrialisation had already started when the Russian Revolution took place in 1917.
c. India seriously commended the achievements of Russia, i.e., hundred percent literacy and rapid industrialisation.
d. Literature, art and music received a setback during the communist regime in Russia.

2.The Indian perception of the Soviet Union was always
a. Neutral
b. Applauding
c. Counter-reactionary
d. Critical

3.The West did not focus on
a. Massive human rights violation of the Soviet state on its people.
b. Rapid growth of nuclear weapons in Russia.
c. Deliberate uprooting and mass migration of ethnic people in the name of industrialisation.
d. Both (a) and (c)

4.The passage is

a. Descriptive
b. Thought-provoking
c. Paradoxical
d. Analytical

1.Excluding stoppages, the speed of a bus is 54 kmph and including stoppages, it is 45 kmph. For how many minutes does the bus stop per hour?

a. 5 min
b. 10 min
c. 4 min
d. 9 min

2. A man wants to reach a window which is 40 feet above the ground. The distance from the foot of the ladder to the wall is 9 feet. How long should the ladder be?

a. 81 feet
b. 40 feet
c. 41 feet
d. 54 feet

3.A, B, C, D, E, F and G are members of a family consisting of four adults and three children, two of whom, F and G are girls. A and D are brothers and A is a doctor. E is an engineer married to one of the brothers and has two children. B is married to D and G is their child. Who is C?
a. E’s daughter
b. G’s brother
c. F’s father
d. A’s son

4.Roy and Kavi are working on an assignment. Roy takes 6 hours to type 32 pages on a computer, while Kavi takes 5 hours to type 40 pages. How much time will they take, working together on two different computers to type an assignment of 110 pages?
a. 8 hours 15 minutes
b. 10 hours
c. 7 hours 50 minutes
d. 6 hours 40 minutes

5.A man can cover a distance in 1hr 24min by covering 2/3 of the distance at 4 km/h and the rest at 5km/h. What is the total distance to be covered?

a. 4 km
b. 6 km
c. 10 km
d. 8 km

6.Out of 130 students appearing in an exam, 62 failed in Science, 52 failed in English, whereas 24 failed in both Science and English. The number of students who passed is
a. 50
b. 20
c. 40
d. 30

7. A girl introduced a boy as the son of the daughter of the father of her uncle. The boy is a girl’s
a. Brother
b. Son
c. Nephew
d. Uncle

8. If TRANSFER is coded as RTNAFSRE, then ELEPHANT would be coded as
a. LEPEHATN
b. LEEPAHTN
c. LEPEAHTN
d. LEPEAHNT

9. A number series is given with one term missing. Choose the correct alternative that will continue the same pattern and fill in the blank spaces.
1, 4, 27, 16, ?, 36, 343
a. 121
b. 244
c. 125
d. 81

10. All good athletes want to win and all athletes who want to win eat a well-balanced diet; therefore all athletes who do not cat a well-balanced diet are bad athletes.

The best conclusion from this statement is that

a. No bad athlete wants to win.
b. No athlete who does not eat a well-balanced diet is a good athlete.
c. Every athlete who eats a well-balanced diet is a good athlete.
d. All athletes who want to win are good athletes.