Atomic and Nuclear Physics MCQs

By: Prof. Dr. Fazal Rehman | Last updated: May 20, 2025

1. : Elements which emit natural radioactivity are called as…
(A) Radio elements
(B) Active elements
(C) Nuclear elements
(D) Radioactive elements

2. : When two light nuclei combine to form a heavier nucleus, that process is said to be…
(A) Nuclear fission
(B) Nuclear transmutation
(C) Nuclear power
(D) Nuclear fusion

3. : Alpha (α) particles are helium (He) nucleus with a charge of…
(A) 2e
(B) e
(C) 3e
(D) 4e

4. : In SI base units, 1 Bq (Becquerel) is equal to…
(A) 10 disintegrations per second
(B) 5 disintegrations per second
(C) 1 disintegration per second
(D) None of the above

5. : In air, the alpha particles (α) have the range of…
(A) Few centimeters
(B) Several thousand meters
(C) Several hundred meters
(D) No limit

6. : Radiations present in the atmosphere due to different radioactive substances are called…
(A) Background radiations
(B) Environmental radiations
(C) Positive radiations
(D) Cosmic radiations

7. : A helium nucleus having two protons and two neutrons with a charge of 2e is…
(A) Alpha particle
(B) Beta particle
(C) Gamma particle
(D) Negative particle

8. : Isotopes have the same number of protons but have different numbers of…
(A) Electrons
(B) Neutrons
(C) Shells
(D) Positrons

9. : The number of protons inside the nucleus represents the…
(A) Atomic mass
(B) Atomic number
(C) Atomic count
(D) Radioactivity level

10. : Radiation emitted from splits into how many components…
(A) 2 components
(B) 3 components
(C) 4 components
(D) 5 components

11. : Beta particles (β) are a stream of high-energy…
(A) Electrons
(B) Protons
(C) Neutrons
(D) None of the above

12. : The phenomenon by which radiations split matter into positive and negative ions is called…
(A) Ionization
(B) Radiation
(C) Transmutation
(D) Radioactivity