The purpose of tubectomy is to prevent:

In male sterilization, a small part of the vas deferens is removed or tied up. What is this procedure called?

Which of the following contraceptive methods has a very high failure rate?

Example of the non-medicated $IUD$ is

Administration of progesterone, progesterone-oestrogen combination, and $IUDs$ are effective as emergency contraceptives within

Find out the correct aspects of lactational amenorrhoea.
$I$. Ovulation does not occur during the lactational period.
$II$. Chances of the failure of contraception are almost nil up to six months following parturition.
$III$. Side effects are almost nil.
$IV$. It is a natural method of contraception.
$V$. It increases phagocytosis of sperms.