Nuclear Structure – Online MCQs – Physics 10th

1. In γ ray emission from a nucleus:

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

3. During nuclear fusion of hydrogen into helium:

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

5. β particles have:

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

7. 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:

8. α particle is a :

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

10. 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:

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

12. The main source of energy in the stars is:

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

14. They carry no electric charge.

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

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

17. Gamma radiations are:

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

19. A radioactive nuclide emits a β-particle. The atomic number (proton number) of the nucleus:

20. Half-life of a radioactive element depends upon