1. : The control rods are made up of cadmium in a nuclear reactor because cadmium is ________.
(A) Emits neutron
(B) Emits electrons
(C) Absorbs excess electrons
(D) Absorbs excess neutron
2. : Who discovered radioactivity?
(A) Henry Becquerel
(B) Madame Curie
(C) J.J. Thomson
(D) Rutherford
3. : Which of the following involves a fusion bomb?
(A) Explosion of TNT
(B) Combustion of oxygen
(C) Destruction of a heavy nucleus into smaller nuclei
(D) Combination of lighter nuclei into a bigger nucleus
4. : Which of the following involves gamma rays?
(A) High energy protons
(B) High energy electron
(C) High energy electromagnetic waves
(D) Low energy waves
5. : Which of the following elements is used for dating ancient remains?
(A) C-14
(B) Ni
(C) C-12
(D) Rd
6. : Which one of the following has no charge?
(A) Alpha rays
(B) Beta rays
(C) Gamma rays
(D) Cathode rays
7. : Hydrogen bomb is based on the phenomenon of _____.
(A) Nuclear explosion
(B) Chemical reaction
(C) Nuclear fusion
(D) Nuclear fission
8. : Which scientist discovered artificial radioactivity?
(A) Hahn and Strassman
(B) Joliot and Irene Curie
(C) Einstein
(D) Rutherford
9. : Uranium gives stable isotopes of _____.
(A) Radon
(B) Krypton
(C) Polonium
(D) Radium
10. : What is the fuel of an atomic pile?
(A) Uranium
(B) Petroleum
(C) Sodium
(D) Thorium