set 1 MCQ Questions & Answers Detailed Explanation

Question : 1

Which of the following are semiconductors?

1. Silicon
2. Quartz
3. Ceramics
4. Germanium

a) 1 and 3

b) 1 and 4

c) 1 and 2

d) 3 and 4

Question : 2

Which fuel is used by Nuclear reactors in India?

a) Gasohol

b) U-500

c) U-270

d) U-238

Question : 3

Graphite is used in the nuclear reactor as

a) Moderator

b) Lubricant

c) Fuel

d) None of these

Question : 4

Which of the following is not a fuel element?

a) Radium

b) Thorium

c) Uranium

d) Helium

Question : 5

Read the following statements.
Assertion (A):
Ernest Rutherford said in Royal Society that a man will never be able to get nuclear energy.
Reason (R):
He was confident that the Law of Einstein will fail and the volume will not be converted to energy.
Select your answer in the code given below.
Code

a) (A) is true, but (R) is false

b) Both (A) and (R) are true, but (R) is not the correct explanation of (A)

c) Both (A) and (R) are true and (R) is the correct explanation of (A)

d) (A) is false, but (R) is true

Question : 6

Which one of the following is used as moderator in a nuclear reactor?

a) Radium

b) Heavy Water

c) Thorium

d) Ordinary Water