The neutron to proton ratio increases during `beta`-decay. (True /false)

Explain with the help of nuclear reaction in each of the following cases, how the neutron to proton ratio changes during beta decay?

Define beta decay?

With the help of example explain how the neutron-proton ratio changes during alpha-decay of the nucleus.

During alpha -decay:

Identify True/False statements, Correct each false statement to make it true: Menstrual cycle ceases during pregnancy. (True/False)

Does the ratio of neutrons to protons in a nucleus increase, decrease or remain the same after the emission of alpha-particl es .

Does the ratio of neurtons to protons in a nucleus increase, decrease or remain the same after the emission of beta-particl es .