Question

Which of the following is/are correct?

1. Chain reaction takes place in a nuclear reactor and an atomic bomb.
2. The chain reaction in a nuclear reactor is controlled
3. The chain reaction in a nuclear reactor is not controlled
4. No chain reaction takes place in an atom bomb

पर्याय

• (i) only correct

• (i) & (ii) are correct

• (iv) only correct

• (iii) & (iv) are correct

Answer 1

(i) & (ii) are correct