Nuclear Science Quiz 4 (25 MCQs)

Quiz Instructions:

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1. What can you conclude about carbon-14 from its name?

2. Activity of one decay per second is equal to

3. Specific gravity of uranium and plutonium is about

4. When nucleus undergoes _____ decay.

5. The ratio of neutrons to protons of an element having a mass number and atomic number of 80 and 40 respectively is

6. Heat is generated in a nuclear reactor (thermal) by

7. What causes nuclear fission

8. Uranium ore is currently mined & concentrated at

9. What is the source of energy used in nuclear reactor?

10. Which of the following statements is correct concerning a radioactive substance?

11. Which of the following ores contains maximum percentage of uranium?

12. How can radioactivity be useful?

13. Nuclear fusion reactions generate the energy released by _____

14. Thermal nuclear reactors using enriched uranium as fuel contains a maximum of _____ percent fissile material i.e. U-235.

15. Time taken by a radioactive substance to decay half is called

16. The average life time of all the nuclei

17. Which of the following nuclear materials is fissile?

18. Gas cooling as compared to water cooling of nuclear reactors

19. The Satellite launching centre of Indian Space Research Organization is in

20. Negatively charged particles emitted from a nucleus at a high speed are _____

21. What are the two types of nuclear reactions?

22. Nuclear power plant in Karnataka is located at

23. Critical energy should be _____ the neutron binding energy of the atom in order to initiate a nuclear fission.

24. Atoms with same number of neutrons, but different number of nucleons are called

25. Minimum energy required to pull nucleus apart is called