$A$ nuclear reaction must be balanced in terms of

$_{92}U^{235} + n \to \text{fission product} + \text{neutron} + 3.20 \times 10^{-11} \ J$. The energy released when $1 \ g$ of $_{92}U^{235}$ undergoes fission is

If the mass defect of ${ }_{5}^{11}B$ is $0.081 \ u$, its average binding energy (in $MeV$) is

The phenomenon of radioactivity arises from the

Which among the following minerals contains a radioactive element?

When nuclear energy is intended to be harnessed for the generation of electricity,the potentially destructive neutrons released in a nuclear reactor are absorbed by: