UPSC CSAT ONLINE MODEL QUESTION FREE DOWNLOAD 2021

 A man takes half time in rowing a certain distance downstream than upstream. What is the ratio or the speed in still water to the speed of current? 

(a) 1 : 2 (b) 2 : 1 (c) 1 : 3 (d) 3 : 1 

Answer: (d) 

How many pairs of natural numbers are there such that the difference of whose squares is 63? 

(a) 3 (b) 4 (c) 5 (d) 2 

Answer: (a) 

Which one of the following will have minimum change in its value if s is added to both numerator and the denominator of the fractions 2/3, 3/4, 4/5 and 5/6? 

(a) 2/3 (b) 3/4 (c) 4/5 (d) 5/6 

Answer: (d) 

A digit n > 3 is divisible by 3 but not divisible by 6. Which one of the following is divisible by 4? 

(a) 2n (b) 3n (c) 2n + 4 (d) 3n + 1

Answer: (d) 

 If 1 litre of water weighs 1 kg, then how many cubic millimeters of water will weigh 0.1 gm? 

(a) 1 (b) 10 (c) 100 (d) 1000 

Answer: (c) 

A vessel full of water weighs 4o kg. If it is one-third filled, its weight becomes 20 kg. What is the weight of the empty vessel? 

(a) 10 kg (b) 15 kg (c) 20 kg (d) 25 kg 

Answer: (a) 

A frog tries to come out of a dried well 4.5 m deep with slippery walls. Every time the frog jumps 30 cm, slides down 15 cm. what is the number of jumps required for the frog to come out of the well? 

(a) 28 (b) 29 (c) 30 (d) 31 

Answer: (b) 

2021-22 UPSC CSAT

 In a class, there are three groups A, B and C. If one student from group A and two students from group B are shifted to group C, then what happens to the average weight of the students of the class? 

(a) It increases. 

(b) It decreases. 

(c) It remains the same. 

(d) No conclusion can be drawn due to insufficient data. 

Answer: (c) 

How many different sums can be formed with the denominations Rs. 50, Rs. 100, Rs. 200, Rs. 500 and Rs. 2,000 taking at least three denominations at a time? 

(a) 16 (b) 15 (c) 14 (d) 10 

Answer: (d)

How many different 5-letter words (with or without meaning) can be constructed using all the letters of the word ‘DELHI’ so that each word has to start with D and end with I? 

(a) 24 (b) 18 (c) 12 (d) 6 

Answer: (d) 

 A bottle contains 20 litres of liquid A. 4 litres of liquid A is taken out of it d replaced by same quantity of liquid B. Again 4 litre of the mixture is taken out and replaced by same quantity of liquid B. What is the ratio of quantity of liquid A to that of liquid B in the final mixture? 

(a) 4 : 1 (b) 5 : 1 (c) 16 : 9 (d) 17 : 8

 Answer: (c)

The average score of a batsman after his 50th innings was 46.4. After 60th innings, his average Score increases by 2.6. What was his average score in the last ten innings? 

(a) 122 (b) 91 (c) 62 (d) 49 

Answer: (c) 

As a result of 25% hike in the price of rice per kg, a person is able to purchase 6 kg less rice for Rs. 1,200. What Was the Original price of rice per kg? 

(a) Rs. 30 (b) Rs. 40 (c) Rs. 50 (d) Rs. 60 

Answer: (b) 

A person can complete 20% of work in 8 days and another person y can complete 25% of the same work in 6 days. If they work together, in how many days will 40% of the work be completed? 

(a) 6 (b) 8 (c) 10 (d) 12 

Answer: (a) 

 A car travels from a place X to place Y at an average speed of v km/hr from y to X at an average speed of 2v km/hr, again from X to y at an average speed of 3v km/hr and again from y to x at an average speed of 4v km/hr. Then the average speed of the car for the entire journey 

(a) is less than v km/hr 

(b) lies between v and 2v km/hr 

(c) lies between 2v and 3v km/hr 

(d) lies between 3v and 4v km/hr 

Answer: (b) 

Consider the following statements: 1. The minimum number of points of intersection of a square and a circle is 2. 2. The maximum number of points of intersection of a square and a circle is 8. Which of the above statements is/are correct? 

(a) 1 only (b) 2 only (c) Both 1 and 2 (d) Neither 1 nor 2 

Answer: (b) 

2021 CSAT MODEL QUESTIONS

The recurring decimal representation 1.272727... is equivalent to

(a) 13/11 (b) 14/11 (c) 127/99 (d) 137/99 

Answer: (b) 

What is the least four-digit number when divided by 3, 4, 5 and 6 leaves a remainder 2 in each case? 

(a) 1012 (b) 1022 (c) 1122 (d) 1222 

Answer: (b) 

In adult Population or a city, 40% men and 30% women are married. What is the percentage of married adult population if no man marries more than one woman and no woman marries more than one man; and there are no widows and widowers? 

(a) 33 1/7% (b) 34% (c) 34 2/7% (d) 35%

Answer: (c) 

What is the remainder when 51 x 27 x 35 x 62 x 75 is divided by 100?

(a) 50 (b) 25 (c) 5 (d) 1 

Answer: (a) 

A sum of Rs. 2,500 is distributed among X, Y and Z in the ratio 1/2 : 3/4 : 5/6 . What is the difference between the maximum share and the minimum share? 

(a) Rs. 300 (b) Rs. 350 (c) Rs. 400 (d) Rs. 450 

Answer: (c) 

For what value of it, the sum of digits in the number (10n + 1) is 2? 

(a) For n= 0 only 

(b) For any whole number n 

(c) For any positive integer n only 

(d) For any read number n 

Answer: (b) 

UPSC CSAT 2021 MODEL APTITUDE QUESTION AND ANSWERS

How many integers are there between 1 and 100 which have 4 as a digit but are not divisible by 4? 

(a) 5 (b) 11 (c) 12 (d) 13  

Answer: (c) 

Let x, y be the volumes; m, n be the masses of two metallic cubes P and Q respectively. Each side of Q is two times that of P and mass of Q is two times that of P. Let u = m / x and V = n / y. which one or the following is correct? 

(a) u = 4v (b) u = 2v (c) v = u (d) v = 4u 

Answer: (a) 

The average age of a teacher and three students is 20 years. If all the three students are of same age and the difference between the age of the teacher and each student is 20 years, then what is the age of the teacher? 

(a) 25 years (b) 30 years (c) 35 years (d) 45 years 

Answer: (c) 

A person bought a car and sold it for Rs. 3, 00,000. If he incurred a loss of 20%, then how much did he spend to buy the car?

(a) Rs. 3, 60,000 (b) Rs. 3, 65,000 (c) Rs. 3, 70,000 (d) Rs. 3, 75,000 

Answer: (d)

The letters from A to Z are numbered from 1 to 26 respectively. If GHI = 1578 and DEF = 912, then what is ABC equal to? 

(a) 492 (b) 468 (c) 262 (d) 246 

Answer: (d) 

What is the missing term in the following? ACPQ : BESU:: MNGI: @ 

(a) NPJL (b) NOJM (c) NPIL (d) NPJM 

Answer: (d) 

50. What is the largest number among the following? 

(a) (1/2)-6 (b) (1/4)-3 (c) (1/3)-4 (d) (1/6)-2 

Answer: (c)

CSAT APTITUDE MODEL QUESTIONS 2021

Two Statements are given followed by two Conclusions: Statements: All cats are dogs. All cats are black. Conclusion-I: All dogs are black. Conclusion-II: Some dogs are not black. 

Which of the above Conclusions logically follows/follow from the two given Statements disregarding commonly known facts? 

(a) Only Conclusion-I 

(b) Only Conclusion-II 

(c) Neither Conclusion-I nor Conclusion-II 

(d) Both Conclusions-I and Conclusion-Il 

Answer: (c) 

Consider the following sequence of numbers: 5 1 4 7 3 9 8 5 7 2 6 3 1 5 8 6 3 8 5 2 2 4 3 4 9 6 How many odd numbers are followed by the odd number in the above sequence? 

(a) 5 

(b) 6 

(c) 7 

(d) 8 

Answer: (b) 

A is 16th from the left end in a row or boys and V is 18th from the right end. Q is 11th from A towards the right and 3rd from V towards the right end. How many boys are there in the row? 

(a) 40 

(b) 41 

(c) 42 

(d) Cannot be determined due to insufficient data 

Answer: (b) 

Three Statements S1, S2 and S3 are given below followed by a Question: Statements: 

S1: C is younger than D, but older than A and B. 

S2: D is the oldest. 

S3: A is older than B. 

Question: Who among A, B, C and D is the youngest? Which one of the following is correct in respect of the above Statements and the Question? 

(a) S1 alone is sufficient to answer the Question. 

(b) S1 and S2 together are sufficient to answer the Question. 

(c) S2 and S3 together are sufficient to answer the Question. 

(d) S1 and S3 together are sufficient to answer the Question. 

Answer: (d)

CSAT 2021 APTITUDE MODEL QUESTION AND ANSWERS

Two Statements S 1 and S2 are given below with regard to four numbers P, Q, R and S followed by a Question: Statements 

S1: R is greater-than P as well as Q. 

S2: S is not the largest one. 

Question: Among four numbers P, Q, R and S which one is the largest? Which one of the following is correct in respect of the above Statements and the Question? 

(a) S1 alone is sufficient to answer the Question. 

(b) S2 alone is sufficient to answer the Question. 

(c) S1 and S2 together are sufficient to answer the Question, but neither S1 alone nor S2 alone is sufficient to answer the Question. 

(d) S1 and s2 together are not sufficient to answer the Question. 

Answer: (c)

Two Statements Si and S2 are given below followed by a Question: Statements: 

S1: n is a prime number.

S2: n leaves a remainder of 1 when divided by 4. Question: If n is a unique natural number between 10 and 20, then what is n? Which one of the following is correct in respect of the above Statements and the Question? 

(a) S1 alone is sufficient to answer the Question. 

(b) S2 alone is sufficient to answer the Question. 

(c) S1 and S2 together are sufficient to answer the Question, but neither S1 alone nor S2 alone is sufficient to answer the Question. 

(d) S1 and S2 together are not sufficient to answer the Question. 

Answer: (d) 

Two Statements S1 and S2 are given below with regard to two numbers followed by a Question: Statements: 

S1: Their product is 21. 

S2: Their sum is 10. Question: What are the two numbers? Which one of the following is correct in respect of the above Statements and the Question? 

(a) S1 alone is sufficient to answer the Question. 

(b) S2 alone is sufficient to answer the Question. 

(c) S1 and S2 together are sufficient to answer the Question, but neither S1 alone nor S2 alone is sufficient to answer the Question. 

(d) S1 and S2 together are not sufficient to answer the Question. 

Answer: (c) 

A man walks down the backside of his house straight 25 meters, then turns to the right and walks 50 meters again; then he turns towards left and again walks 25 meters. If his house faces to the East, what is his direction from the starting point? 

(a) South-East 

(b) South-west 

(c) North-East 

(d) North-west 

Answer: (d) 

Two Statements are given followed by two Conclusions: Statements: All numbers are divisible by 2. All numbers are divisible by 3. Conclusion-I All numbers are divisible by 6. Conclusion-Il All numbers are divisible by 4. 

Which of the above Conclusions logically follows/follow from the two given Statements? 

(a) Only Conclusion-I 

(b) Only Conclusion-II 

(c) Neither Conclusion-I nor conclusion-II 

(d) Both Conclusions-I and Conclusion-II 

Answer: (a)

CSAT APTITUDE 2021

 A family of two generations consisting of six members P, Q, R, S, T and U has three males and three females. There are two married couples and two unmarried siblings. U is P’s daughter and Q is R’s mother-in-law. T is an unmarried male and S is a male. 

Which one of the following is correct? 

(a) R is U's husband. 

(b) R is S's wife. 

(c) S is unmarried. 

(d) None of the above 

Answer: (d) 

If in a particular year 12th January is a Sunday, then which one of the following is correct? 

(a) 15th July is a Sunday if the year is a leap year.

(b) 15th July is a Sunday if the year is not a leap year. 

(c) 12th July is a Sunday if the year is a leap year. 

(d) 12th July is not a Sunday if the year is a leap year. 

Answer: (c)

Two statements S1 and S2 are given below followed by a Question: Statements: 

S1: There are not more than two figures on any page of a 51-page book. 

S2: There is at least one figure on every page.

Question: Are there more than 100 figures in that book? Which one of the following is correct in respect of the above Statements and the Question? 

(a) Both S1 and S2 are sufficient to answer the Question, but neither S1 alone nor S2 alone is sufficient to answer the Question. 

(b) S1 alone is sufficient to answer the Question. 

(c) S1 and S2 together are not sufficient to answer the Question. 

(d) S2 alone is sufficient to answer the Question.

Answer: (c)

CSAT MODEL QUESTION 2021 - Aptitude

If you have two straight sticks of length 7.5 feet and 3.25 feet, what is the minimum length you can measure? 

(a) 0.05 foot (b) 0.25 foot (c) 1 foot (d) 3.25 feet

Answer: (c) 

A simple mathematical operation in each number of the sequence 14, 18, 20, 24, 30, 32, ..... results in a sequence with respect to prime numbers. Which one of the following is the next number in the sequence? 

(a) 34 (b) 36 (c) 38 (d) 40

 Answer: (c) 

One page is torn from a booklet whose pages are numbered in the usual manner starting from the first page as 1. The sum of the numbers on the remaining pages Is 195. The torn page contains which of the following numbers? 

(a) 5, 6 (b) 7, 8 (c) 9, 10 (d) 11, 12 

Answer: (b) 

Consider the following arrangement that has some missing letters: abab_b_bcb_dcdcded_d The missing letters which complete the arrangement are 

(a) a, b, c, d (b) a, b, d, e (c) a, c, c, e (d) b, c, d, e 

Answer: (c) 

Let A3BC and DE2F be four-digit numbers where each letter represents a different digit greater than 3. If the sum of the numbers is 15902, then what is the difference between the values of A and D? 

(a) 1 (b) 2 (c) 3 (d) 4 

Answer: (c)

CSAT MODEL QUESTION 2021

 How many zeroes are there at the end of the following product? 

1 x 5 x 10 x 15 x 20 x 25 x 30 x 35 x 40 x 45 x 50 x 55 x 60 

(a) 10 (b) 12 (c) 14 (d) 15 

Answer: (a) 

Let XYZ be a three-digit number, where (x + y + Z) is not a multiple of 3. Then (XYZ + YZX + ZXY) is not divisible by 

(a) 3 (b) 9 (c) 37 (d) (X + Y + Z) 

Answer: (b) 

Let p, q, r and s be natural numbers such that p - 2016 = q + 2017 = r – 2018 = s + 2019 which one of the following is the largest natural number? 

(a) p (b) q (c) r (d) s 

Answer: (c) 

How many five-digit prime numbers can be obtained by using all the digits 1, 2, 3, 4 and 5 without repetition of digits? 

(a) Zero (b) One (c) Nine (d) Ten 

Answer: (a) 

In the sum ®+1®+ 5®+®®..® 1®® for which digit does the symbol ® stand? 

(a) 2 (b) 3 (c) 4 (d) 5 

Answer: (b)

UPSC CSAT MODEL PASSAGE QUESTIONS 2021

 In India, over the last decade or so, labour has been departing agriculture, but is only going to construction and unregistered manufacturing which are not markedly better jobs. Services, where labour tends to be most productive, are not generating the additional jobs the country needs. India will need 24 million or so jobs over the next decade. The new sector, e-commerce, can at best close only half the jobs gap. Only those sectors that drive domestic demand such as health and education can comfortably fill the other half. 

1. Which one of the following is best Implied in the passage? 

(a) Strong measures need to be taken to reduce the rural to urban migration of labour. 

(b) The working condition in construction and unregistered manufacturing needs to be improved. 

(c) service sector has been reducing the problem of unemployment. 

(d) Increased social sector spending is imperative for large-scale job creation. 

Answer: (d)