Chemistry PYQ 151 of 152 · Radioactivity

With reference to the radioactivity, which of the following statements is/are correct?
1. Radioactivity is a nuclear property.
2. Hydrogen bomb is prepared on the principle of nuclear fission.
Select the correct answer using the code given below.

AOnly 1
BOnly 2
CBoth 1 and 2
DNeither 1 nor 2

UPPSC 2021

Show answer and explanation

Correct answer: (a) Only 1

Explanation

Radioactivity is the spontaneous emission of particles/energy from an unstable nucleus, so it is a nuclear property (statement 1 correct).

A hydrogen bomb works on uncontrolled nuclear fusion, not fission (statement 2 wrong); fission powers the atom bomb.

Units of radioactivity are the Becquerel (1 decay/s) and Curie.

With reference to the radioactivity, which of the following statements is/are correct?1. Radioactivity is a nuclear property.2. Hydrogen bomb is prepared on the principle of nuclear fission.Select the correct answer using the code given below.

Explanation

With reference to the radioactivity, which of the following statements is/are correct?
1. Radioactivity is a nuclear property.
2. Hydrogen bomb is prepared on the principle of nuclear fission.
Select the correct answer using the code given below.