24 March 2023 – Evening Shift – UGC NET Paper-1

Total Questions: 50

21. A family comprises of 3 persons A, B and C. The age of A is four times that of B. In four years time, A will be 40 years old. The age of C was half the age of A four years ago. Find the present age of B and C (in years), respectively.

Correct Answer: (1) 9, 20

22. While pointing towards a picture, a man says "This girl is the wife of the grand-son of my mother". How is the man related to the girl in the picture?

Correct Answer: (3) Father-in-law

23. A man starts from a point X and walks 20 meters to reach a point Y in the north-east direction. He then turns right and walks 20 meters again to reach a point Z. How far is the point Z from point X?

Correct Answer: (1) 20√2 m

24. A man invests some amount of money for some time period. This amount of money becomes *4500 at the rate of 7% simple interest. However, if invested at 5% per annum simple interest, the same amount becomes ₹3500. Find out the amount of money and the time period.

Correct Answer: (1) ₹ 1000, 50 years.

25. What number should replace question mark (?) in the series given below:

12, 12, 24, 72, 288, ?, 8640

Correct Answer: (4) 1440

26. If 'No metals are gases' is given as false, then which of the following statements can be immediately inferred to be true?

A. All gases are metals.
B. All metals are gases.
C. Some metals are not gases.
D. Some metals are gases.

Choose the correct answer from the options given below:

Correct Answer: (3) D only

27. Which of the following statements are so related that they can not both be false, although they may both be true?

A. All metals are gases.
B. Some metals are gases.
C. Some metals are not gases.
D. No metals are gases.

Choose the correct answer from the options given below:

Correct Answer: (2) B and C only

28. "The last time I stretched my arms first and my legs second, I won my race, So that stretching sequence must have increased my speed." Which informal fallacy is committed in the above statement?

Correct Answer: (2) False alternative

29. Which of the following statements is logically equivalent to the statement - No metals are gases'?

Correct Answer: (2) No gases are metals.

30. According to Nyaya (classical Indian school of logic) Which fallacy is committed in the following argument- 'Sound is eternal because it is produced'?

Correct Answer: (4) Viruddha