TNPSC Atomic and Nuclear Physics Multiple Choice Questions - 1

Question: 1

Radioactive elements radium and polonium were discovered by

(A) Bothe and Becker

(B) Joliot and Curie

(C) Chadwick

(D) Marie Curie and Pierre Curie

Question: 2

One Fermi is equal to

(A) 10^-5 m

(B) 10^-10 m

(C) 10^-15 m

(D) 10^-20 m

Question: 3

1 Becquerel = _____ disintegrations per second.

(A) one

(B) two

(C) three

(D) four

Question: 4

The process in which a nucleus of one element is converted into nucleus of another element is

(A) nuclear reaction

(B) chemical reaction

(C) physical reaction

(D) thermal reaction

Question: 5

Atoms of an element containing the same number of protons but different number of neutrons are called

(A) Isomers

(B) Isotones

(C) Isobars

(D) Isotopes