The radioactive nucleus $_7N^{13}$ decays to $_6C^{13}$ through the emission of

Explain the $\alpha$-decay process and give its appropriate example.

Which of the following is not a mode of radioactive decay?

The electron emitted in beta radiation originates from

An artificial radioactive decay series begins with unstable $_{94}^{241}Pu$. The stable nuclide obtained after eight $\alpha$-decays and five $\beta$-decays is

The most penetrating radiation out of the following is