$_{90}Th^{228}$ emits four alpha and one beta particles. The number of neutrons in the daughter element is:

In the radioactive disintegration series ${}_{90}^{232}Th \rightarrow {}_{82}^{208}Pb$ involving $\alpha$ and $\beta$ decay,the total number of $\alpha$ and $\beta$ particles emitted are:

The hydrogen bomb is based on the phenomenon of:

If radium and chlorine combine to form radium chloride, the compound would be

India conducted an underground nuclear test at

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: