Question

Statement 1: Hydrogen nucleus combines to form helium then energy is released.
Statement 2: Binding energy/nucleon of $He$ is greater than hydrogen.

• A. If both Statement $1$ and Statement $2$ are true and the statement $2$ is the correct explanation of the statement $1$.
• B. If both Statement $1$ and Statement $2$ are true but statement $2$ is not the correct explanation of the statement $1$.
• C. If Statement $1$ is true but Statement $2$ is false.
• D. If Statement $1$ is false but Statement $2$ is true

Answer 1

Answer: (A)

A nuclear reaction in which two lighter nuclei are fused together to form a heavier nuclei is called nuclear fusion. In such a process, more stable nuclei come into existence and binding energy per nucleon increases. Fusion reactions are highly exothermic because of loss of mass during fusion. e-g-
$^{2}_{1}H +^{2}_{1}H \rightarrow ^{4}_{2}He +24.9 MeV $