Consider the following statements: Statement I: All Booklets are Manuals. Statement II: All Manuals are Catalogues. If Statements I and II are True, which one of the following conclusions can be conclusively drawn?
CSIR NET June 2025 — Part A — General Aptitude
All 18 Part A questions we have transcribed from this paper, of the 118 on the site for this sitting — every option and the answer key, with the reasoning for each one.
Part A
General aptitude. One correct option. 2 marks, −0.5 for a wrong answer, and 15 of the 20 count.
Q1Converse assumed
- A.All Manuals are Booklets.
- B.All Catalogues are Booklets.
- C.All Booklets are Catalogues.✓
- D.All Catalogues are Manuals.
Trap Analysis has the working, and why each of the other options was written to tempt you.
Q2Boundary and endpoint
A Venn diagram shows the numbers of players playing one or more than one sport among Football, Cricket and Tennis: 18 play Football only, 24 play Cricket only, 20 play Tennis only, 7 play Football and Cricket but not Tennis, 11 play Football and Tennis but not Cricket, 8 play Cricket and Tennis but not Football, and 4 play all three sports. The percentage of players who play exactly two sports is closest to ____%.
- A.5
- B.14
- C.28✓
- D.32
Trap Analysis has the working, and why each of the other options was written to tempt you.
Q3Execution slip
The value of a company is measured as the total value of its shares owned by different investors. Rakesh owns 2/15 of the shares of a company. He sells 1/3 of his shares for Rs. 75,000/-. What is the total value of the company at that time?
- A.Rs. 15,75,800
- B.Rs. 16,87,500✓
- C.Rs. 17,75,800
- D.Rs. 18,27,500
Trap Analysis has the working, and why each of the other options was written to tempt you.
Q4Execution slip
A car has wheels of diameter 36 cm. If it runs at a speed of 60 km/h, then the rotation per minute (RPM) will be closest to ____.
- A.884✓
- B.898
- C.906
- D.986
Trap Analysis has the working, and why each of the other options was written to tempt you.
Q5Execution slip
A cylindrical container of radius 20 cm was filled with water up to 25 cm height. A solid spherical ball of radius 7 cm was then immersed in the water. What would be the approximate increase in water level in the container after the ball was fully immersed?
- A.1.14 cm✓
- B.2.28 cm
- C.5.50 cm
- D.7.00 cm
Trap Analysis has the working, and why each of the other options was written to tempt you.
Q6Execution slip
The market share (%) and annual production of scooters from five automobile companies P, Q, R, S and T are shown in graphs. The market shares are P 17%, Q 25%, R 24%, S 14% and T 20%. The annual production, in thousands of scooters, is P 80, Q 120, R 110, S 80 and T 100. If the profit of a company is directly proportional to the ratio of market share to production, then which of the following statements is/are CORRECT? Statement X: Companies T and P have same profit. Statement Y: Company R has the maximum profit. Statement Z: Company S has the minimum profit.
- A.X and Y
- B.X and Z
- C.Y and Z✓
- D.Only Z
Trap Analysis has the working, and why each of the other options was written to tempt you.
Q7Execution slip
Rahul and his father started jogging on a circular track of radius 'r' (r > 2). Rahul completed one round and stopped. His father got tired half way into the first round and returned to his starting point along a straight line. What is the ratio of the distances covered by Rahul and his father?
- A.πr/(π+2)
- B.2π/(π+2)✓
- C.1
- D.2
Trap Analysis has the working, and why each of the other options was written to tempt you.
Q8Execution slip
Kavita starts from her house and walks 200 m northward, then turns 45° right and walks 70 m. After that, she turns 90° right and walks 70 m. Which of the following is the closest value of the shortest distance between Kavita's current location and her house?
- A.296 m
- B.240 m
- C.200 m
- D.223 m✓
Trap Analysis has the working, and why each of the other options was written to tempt you.
Q9Execution slip
The initial monthly salaries of employees John, Riya, and Sunil were in the proportion 4:3:5. After an increase of Rs 10000 monthly to all, the new proportion becomes 6:5:7. What was the initial salary of Sunil?
- A.Rs 20000
- B.Rs 25000✓
- C.Rs 30000
- D.Rs 35000
Trap Analysis has the working, and why each of the other options was written to tempt you.
Q10Execution slip
Numbers of Rose, Lotus, and Marigold plants in a garden are in the proportion 8:5:7. Later, 75%, 40% and 50% more plants of their respective categories were added. What will be the new proportion of plants, in the same order?
- A.5:3:4
- B.4:2:3✓
- C.5:4:3
- D.7:4:5
Trap Analysis has the working, and why each of the other options was written to tempt you.
Q11Standard counterexample
What will be the digit at the unit's place of 13+23+33+43+53+63+73+83+93?
- A.0
- B.5✓
- C.7
- D.9
Trap Analysis has the working, and why each of the other options was written to tempt you.
Q12Hypothesis dropped
Suresh asked Ramesh to identify the person in a photo that the latter is holding. Ramesh responds, "I have no brothers or sisters. However, that man's father is my father's son." Who is the person in the photo?
- A.Suresh
- B.Ramesh
- C.Ramesh's son✓
- D.Ramesh's cousin
Trap Analysis has the working, and why each of the other options was written to tempt you.
Q13Execution slip
Three identical semi-circles are arranged on a common horizontal line, two standing above the line and one below it. The diameter of the left-hand upper semi-circle begins at the left end of the line, the diameter of the right-hand upper semi-circle ends at the right end of the line, and the lower semi-circle lies between them. Along the line, the distance from the left end of the line to the left end of the lower semi-circle's diameter is 15, the distance from the right end of the lower semi-circle's diameter to the right end of the line is 15, and the gap between the right end of the left upper semi-circle's diameter and the left end of the right upper semi-circle's diameter is 10. What is the diameter of the semi-circles?
- A.5π
- B.20✓
- C.15π/2
- D.25
Trap Analysis has the working, and why each of the other options was written to tempt you.
Q14Execution slip
A number is mistakenly divided by 2 instead of being multiplied by 2. What is the change in the result caused by this mistake?
- A.25%
- B.50%
- C.75%✓
- D.100%
Trap Analysis has the working, and why each of the other options was written to tempt you.
Q15Execution slip
In a code, the word DELTOID is written as 3152893. Then LOTION could be written as
- A.582986✓
- B.582981
- C.198396
- D.198392
Trap Analysis has the working, and why each of the other options was written to tempt you.
Q16Execution slip
Sum of the digits of a two-digit number 'ab' is subtracted from the number and the result is divided by 9. Then the result of this will be
- A.always a✓
- B.always b
- C.neither a nor b
- D.either a or b depending on a+b
Trap Analysis has the working, and why each of the other options was written to tempt you.
Q17Execution slip
A stock market trader has lost two thirds of her investment on a day. Next day she recovered one third of the previous day's loss. What fraction of her initial investment is she left with?
- A.1/3
- B.2/3
- C.2/9
- D.5/9✓
Trap Analysis has the working, and why each of the other options was written to tempt you.
Q18Hypothesis dropped
Three friends, Mr. Rahman, Mr. George and Mr. Vedant, met after a long time. They were wearing red, green and violet colour shirts. Mr. Rahman and the person wearing violet shirt noticed that none of the three is wearing a colour that starts with same letter as his name. Which one of the following is the correct match of the persons with the colour of their shirts?
- A.Rahman-Violet, George-Red, Vedant-Green
- B.Rahman-Green, George-Violet, Vedant-Red✓
- C.Rahman-Green, George-Red, Vedant-Violet
- D.Rahman-Red, George-Violet, Vedant-Green
Trap Analysis has the working, and why each of the other options was written to tempt you.