Tablets to prevent contraception contain

Choose the correct option for non-medicated $IUDS$.

Which is a contraceptive method with no side effects?

$IUDs$ 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 $hours$)

$ . . . . . . $ is a natural contraceptive method.

What is the surgical procedure called where the fallopian tubes are cut and the ends are tied?