Atomic and Nuclear Physics MCQs

Atomic and Nuclear Physics MCQs

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 an 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 disintegration per second

B. 5 disintegration per second

C. 1 disintegration per second

D. None of 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 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 same number of protons but having different number of…

A. electrons

B. neutrons

C. shells

D. positrons

9. Number of protons inside of 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 stream of high energy …

A. electrons

B. protons

C. neutrons

D. none of above

12. Phenomenon by which radiations split matter into positive and negative ions is called

A. ionization

B. radiation

C. transmutation

D. radioactivity