1. : Elements which produce natural radioactivity are known as…
(A) Radio elements
(B) Active elements
(C) Nuclear elements
(D) Radioactive elements
2. : Heavier nuclei made by the combination of two light nuclei, that process is said to be…
(A) Nuclear fission
(B) Nuclear fusion
(C) Nuclear power
(D) Nuclear transmutation
3. : Alpha (α) particles are helium (He) nucleus with a charge of…
(A) e
(B) 2e
(C) 3e
(D) 4e
4. : A helium nucleus comprising of two neutrons and two protons with a charge of 2e is…
(A) Beta particle
(B) Alpha particle
(C) Gamma particle
(D) Negative particle
5. : Isotopes have different numbers of neutrons but the same number of…
(A) Protons
(B) Neutrons
(C) Positrons
Answer: (A) Protons
6. : The number of protons inside the nucleus represents…
(A) Atomic mass
(B) Atomic number
(C) Atomic count
(D) Radioactivity level
7. : Beta particles are a stream of high-energy…
(A) Electrons
(B) Protons
(C) Photons
(D) Positrons
8. : The phenomenon by which radiations split matter into positive and negative ions is called…
(A) Ionization
(B) Radiation
(C) Transmutation
(D) Radioactivity
9. : Radiation emitted from splits into…
(A) 3 components
(B) 4 components
(C) 5 components
(D) 2 components
10. : Positive charge in an atom was intense in a small region called…
(A) Atomic mass
(B) Electron
(C) Proton
(D) Nucleus
11. : Elements whose atomic number is greater than 82 are called as…
(A) Positive nuclei
(B) Stable nuclei
(C) Unstable nuclei
(D) Negative nuclei
12. : During natural radioactivity, an unstable nucleus disintegrates to become more…
(A) Stable
(B) Unstable
(C) Excited
(D) Unexcited