Diaphragms,cervical caps,and vaults are:

Most of the contraceptive pills contain

In male sterilization,$A$ is cut and tied. This process is called $B$. Fill in the correct option for $A$ and $B$.

Natural methods of contraception work on the principle of avoiding chances of ovum and sperm meeting. It includes:
$A.$ Periodic abstinence
$B.$ Withdrawal
$C.$ Coitus interruptus
$D.$ Lactational amenorrhoea

These methods of birth control are highly effective,but their reversibility is very poor.

Give differences: Vasectomy and Tubectomy.