Nuclear Structure – Online MCQs – Physics 10th

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

2. A radioactive decay can be represented as shown. ₉₁Pa²³³ → ₉₂U²³³ + . . . . The emitted particle is Wan

3. 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:

4. In radiosurgery, a strong gamma emitter __________ is used.

5. α-particles has a charge of:

6. They carry no electric charge.

7. A radioactive element emits a particle from the nucleus of one of its atoms. The particle comprises two protons and two neutrons. The name of this process is called:

8. When atoms lose or gain electrons, they become:

9. The splitting of a heavy nucleus into smaller nuclei is called:

10. α particle is a :

11. Radioactive materials should be handled carefully. Which safety measure does not reduce the risk of using radioactive material?

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 severe health hazards caused by radioactive emissions is/are:

14. In the core of the sun hydrogen is being converted into helium. It takes ________ hydrogen atoms to fuse into each helium atom.

15. Various types of cancer are treated by:

16. ₁H² + ₁H³ → ₂He⁴ + ₀n¹ + energy. This reaction is an example of:

17. If the radioactive source is placed inside the electric field, this radiation does not change its direction.

18. The rate of radioactive decay is proportional to the:

19. The number of neutrons in the uranium nucleus will be:

20. In the core of the sun hydrogen is being converted into helium. This is called: