Nuclear Science Quiz 7 (25 MCQs)

Quiz Instructions:

Select an option to see the correct answer instantly.

1. Radioactive decay is a _____ change.

2. Which one is radioactive material?

3. Greater decay constant

4. Which one is radioactive in nature?

5. The amount of a radioisotope remaining undecayed after a time equal to four times its half life, will be _____ percent.

6. Neutrino theory of beta decay developed by

7. What do carbon-12 and carbon-14 have in common?

8. Identify the type of nuclear decay shown here21483Bi $\rightarrow$ 0-1e + 21484Po

9. How many neutrons does uranium-239 have

10. Main source of _____ is monazite sand.

11. Radioactive decay is a

12. Nucleus of tritium has _____ neutrons.

13. Why is burning fossil fuels bad for the environment?

14. In the symbol 20682Pb what does 206 stand for?

15. Mass excess for U-235 is

16. As compare to proton, mass of neutron is

17. One of the element used in generating nuclear power is _____

18. Nuclear fusion releases energy when

19. Splitting a large atom into two or more smaller atoms is called

20. If energy is released from a system, it's mass

21. U-235 content in enriched uranium, that is normally used in power reactors (e.g., at Tarapur atomic power plant), is about _____ percent.

22. Percentage of U-238 in natural uranium is around

23. Which one is different for the neutral atoms of the isotopes of an element?

24. What happens when the number of protons in an atom changes?

25. The credit of construction of first nuclear reactor goes to