Nuclear Structure – Online MCQs – Physics 10th

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

2. Which one of these particles has the shortest penetrating ability?

3. Gamma radiations are:

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

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

6. The α-radiation is:

7. Half-life of a radioactive element depends upon

8. A nuclear reaction is given by:

9. In γ ray emission from a nucleus:

10. A scientist experiments using a seated source that emits β-particles. The range of the β-particles in the air is about 30cm. The precaution that is the most effective to protect the scientist from radiation is:

11. α-particles has a charge of:

12. 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:

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

14. β particles have:

15. It is the most dangerous of all other radioactive radiations.

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

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

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

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

20. 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: