Use of spermicidal creams,jellies and foams along with diaphragms,cervical caps and vaults leads to

How do $Cu$-releasing Intrauterine Devices $(IUDs)$ function?

Which of the following oral contraceptive pills has the fewest side effects?

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.

Copper releasing $IUDs$ are used for suppressing the

Match the following columns:

Column-$I$	Column-$II$
$(1)$ Tubectomy	$(a)$ Female sterilization
$(2)$ First generation $IUD$	$(b)$ Non-steroidal pill
$(3)$ Second generation $IUD$	$(c)$ Lippes loop
$(4)$ Saheli	$(d)$ $Cu-T$