Question

The nuclear reaction-
${}_1^{2}H+{{}_1^{2}H}^{}⟶{}_2^{4}He$ is called:

• A. fission reaction
• B. fusion reaction
• C. chain reaction
• D. thermal reaction

Answer 1

Answer: (B)

Nuclear fusion is a process where two or more nuclei combine to form an element with a higher atomic number (more protons in the nucleus). Fusion is the reverse process of nuclear fission.

The nuclear reaction -

${}_1^{2}H+{{}_1^{2}H}^{}⟶{}_2^{4}He$ is fusion reaction because two nuclei combine to form an element with higher atomic number.During this process, 0.7% of the mass is carried away from the system in the form of kinetic energy.

So the answer is B.