11 March 2023 – Morning Shift – UGC NET Paper-1

Total Questions: 50

21. Find the 51ˢᵗ term of the following series:

12, 13½, 15, 16½, 18, ... .....

Correct Answer: (2) 87

22. In a class of 60 students, the average height of 20 students is x centimeter, the average height of other 20 students is y centimeter and the average height of the remaining 20 students is z centimeter. Find the average height of the whole class.

Correct Answer: (4) (x + y + z) / 3 cm

23. Two persons A and B can do a piece of work in 45 and 40 days, respectively. They started their work together but A left after some days and remaining work was completed by B in 23 days. Find after how many days did A leave?

Correct Answer: (4) 9

24. A man deposited Rs. 1.0 lakh in his bank account and earned a profit of Rs. 25,000 @5% simple interest per annum. Find out the time period for which the money deposited by the man remained in the bank.

Correct Answer: (2) 5 years

25. A fruit seller sells 80% of the fruits he has with him. Out of the remaining fruits he throws away 20% of them only. Next day he sells 50% of the leftover fruits from the previous day and throws away the rest. What total percentage of the fruits does the seller throw?

Correct Answer: (2) 20%

26. Which informal fallacy is committed in the following argument. "The quality of higher education in our country has been declining for years. Therefore we can conclude beyond doubt that university teachers are not doing their job these days"?

Correct Answer: (1) False cause

27. If the proposition-"No mammals are aquatic animals" is given as true, then which of the following propositions can be directly inferred from it?

Correct Answer: (1) Some mammals are not aquatic animals.

28. Which of the following statements are logically equivelent?

A. some dogs are not aggresive animals.
B. some dogs are aggresive animals.
C. some non-dogs are aggresive animals.
D. some non-aggresive animals are not non-dogs.

Choose the correct answer from the options given below:

Correct Answer: (3) A and D only

29. Which of the following statements are contrary to each other?

A. All objects are perishable.
B. Some objects are perishable.
C. Some objects are not perishable.
D. No objects are perishable.

Choose the correct answer from the options given below:

Correct Answer: (2) A and D only

30. When I ask my friend for my way about his residence over the phone, which of the following instruments of knowledge is used by me to hear and understand what my friend says, as per classical Indian school of logic(Nyāya)?

Correct Answer: (1) Perception (Pratyaksa)