$IUDs$ within .......... of coitus have been found to be very effective as emergency contraceptives as they could be used to avoid possible pregnancy due to rape or casual unprotected intercourse. (in $hours$)

Give differences: Vasectomy and Tubectomy.

Which of the following functions are true for copper ions released by copper-releasing $IUDs$?
$I -$ Suppress sperm motility
$II -$ Inhibit the fertilizing capacity of sperms
$III -$ Make the uterus unsuitable for implantation
$IV -$ Make the cervix hostile to sperms

Which of the following is not included in the physical barriers used to prevent fertilization?

Which option shows correctly matched pairs for Column-$I$ and Column-$II$?

Column-$I$	Column-$II$
$p$. Natural method	$i$. Cervical caps
$q$. Barrier method	$ii$. Hormone releasing $IUD$
$r$. Multiload $375$	$iii$. Coitus interruptus
$s$. $LNG-20$	$iv$. Non-medicated $IUD$
	$v$. Copper releasing $IUD$

Select the odd one out.