Nuclear Structure – Online MCQs – Physics 10th

1. Half-life of a radioactive element depends upon

2. A powder contains 100mg of a radioactive material that emits α-particles. The half-life of the isotope is five days. The mass of isotope that remains after ten days will be:

3. The heaviest isotopes (proton number, Z > 83) decay by _________ emissions.

4. A particle having the mass of an electron and the charge of a proton is called a:

5. The safest way to dispose of a large quantity of radioactive waste is:

6. Beta radiation is a streamlet of high-energy:

7. To check thyroid function, a patient drinks a liquid containing radio:

8. The severe health hazards caused by radioactive emissions is/are:

9. A radioactive decay can be represented as shown. ₈₈Ra²²⁶ → ₈₆Rn²²² + . . . . The emitted particle is a/an:

10. In the graph of unstable nuclei, stable isotopes lie:

11. A nuclear reaction is given by:

12. In alpha decay, the proton number or atomic number, Z of the parent nuclide reduces by _________ while its atomic mass or nucleon number, A, decreases by __________.

13. The radio active source is placed inside the electric field, α-particles are deflected towards a:

14. Various types of cancer are treated by:

15. High penetrating power of gamma rays is due to their:

16. For the diagnosis of brain tumors, the ___________ isotope is used.

17. A radioactive decay can be represented as shown. ₆C¹⁴ → ₇N¹⁴ + . . . . The emitted particle is a/an:

18. Radioactivity is:

19. In each nuclear fission, a few neutrons are emitted. These neutrons can trigger further nuclei to undergo self-sustained fission reaction that is known as:

20. Isotopes above the stability line have: