Which of the following radiations is deflected by an electric field?

Before the neutrino hypothesis,the beta decay process was thought to be the transition $n \to p + e^-$. If this were true,show that if the neutron was at rest,the proton and electron would emerge with fixed energies and calculate them. Experimentally,the electron energy was found to have a large range.

Which of the following is deflected by an electric field?

The nucleus $_{48}^{115}Cd$ after two successive ${\beta ^ - }$ decays will give:

In the given nuclear decay process,identify the order in which radioactive radiations are emitted:
${}_{Z}^{A}X \to {}_{Z+1}^{A}Y \to {}_{Z-1}^{A-4}K \to {}_{Z-1}^{A-4}K$

Which of the following statements is correct?