Surgical removal of testes is known as

Comment on the essential features required for an ideal contraceptive.

Which of the following statement is/are correct about diaphragms, cervical caps and vaults?

$A.$ Barrier methods of contraception

$B.$ Cover the cervix during coitus

$C.$ Protect the user from contracting $STDs$

$D.$ They are reusable
 

$A$ : Intrauterine devices $(IUDs)$ are very effective contraceptive method.
$R$ : $IUDs$ don't allow sperms to enter the uterus.

Amongst the following methods of contraception, which can be regarded as the most cost effective and easily reversible method of contraception?

$A$ : Saheli - the new oral contraceptive for the female contains a non-steroidal preparation.
$R$ : It is 'once a week' pill with very few side effects and high contraceptive value.