Nuclear Science Quiz 2 (20 MCQs)

Quiz Instructions

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1. The energy released by the decay of one U-235 atom will be of the order of

Correct Answer: B) 100 MeV.

2. Another advantage of nuclear energy is that .....

Correct Answer: A) It reduces energy generated from fossil fuels.

3. Which of the following may not need a control rod?

Correct Answer: D) None of these.

4. The most penetrating type of radiation is the .....

Correct Answer: B) Gamma ray.

5. The initial energy of about electron

Correct Answer: D) 50 to 80 MeV.

6. Which particle is the least strong

Correct Answer: A) Alpha.

7. Nuclear power plants use ..... as fuel.

Correct Answer: A) Uranium.

8. Which of these is used as moderator in nuclear reactor

Correct Answer: D) All of the above.

9. Most stable isotope in nature is of

Correct Answer: A) Iron-56.

10. The decrease in the atomic number is not observed in case of

Correct Answer: B) $\beta$-emission.

11. One disadvantage of nuclear energy is .....

Correct Answer: B) It leaves behind radioactive waste.

12. Which of the following is a short term effect of radioactive radiation on humans?

Correct Answer: A) Nausea and vomitting.

13. Mass number is .....

Correct Answer: A) Protons and neutrons.

14. A moderator ..... the neutrons.

Correct Answer: C) Slows down.

15. Nuclear fusion reactions generate the energy released by

Correct Answer: A) The sun.

16. ..... Is the attractive force that holds a nucleus together

Correct Answer: B) Strong nuclear force.

17. Uranium is found in

Correct Answer: C) Rocks in the ground.

18. Which of the following is not a naturally occurring nuclear fuel?

Correct Answer: C) Plutonium-239.

19. Which particle is most harmful to a human

Correct Answer: B) Gamma.

20. Fast breeder nuclear reactors using enriched uranium as fuel may contain upto a maximum of ..... percent of U-235 (i.e. fissile material).

Correct Answer: D) 85.