Atoms, Radioactivity and Nuclear Science

(a) Beta rays
(b) Alpha rays
(c) Gamma rays
(d) Cathode rays

(a) Proton
(b) Electron
(c) Neutron
(d) None of these

(a) Uranium – 238
(b) Neptunium – 239
(c) Plutonium – 239
(d) Thorium – 236

(a) No chain reaction takes place in nuclear reactor while in the atomic bomb,there is a chain reaction
(b) The chain reaction in nuclear reactor is controlled.
(c) The chain reaction in nuclear reactor is not controlled.
(d) None of these

(a) 5
(b) 4
(c) 7
(d) 10

(a) 1300 A⁰-3000 A⁰
(b) 3900 A⁰-7600 A⁰
(c) 7700 A⁰-7900 A⁰
(d) 8400 A⁰-9700 A⁰

(a) Thorium
(b) Radium
(c) Radon
(d) Plutonium

(a) Conversion of neutrons into protons
(b) Conversion of mass into energy
(c) Conversion of mechanical energy into nuclear energy
(d) None of these

(a) Visible radiation
(b) Radio waves
(c) Gamma rays
(d) X-rays

(a) Atomic number and electronic configuration
(b) Atomic number and number of valence electrons
(c) Number of neutrons and electronic configuration
(d) Number of neutrons and number of valence electrons