Which of the following is a non-steroidal oral contraceptive pill taken once a week?

Tablets to prevent contraception contain

Which process do the contraceptive pills $Today$ and $Nim-72$ use to prevent fertilization?

Find out the correct statement.
$I$. Pills prevent ovulation during use as a contraception technique.
$II$. Copper-$T$ prevents implantation.
$III$. Vasectomy produces semen containing no sperm.

Progestasert and $LNG-20$ are

Choose the correct option which can be used by females as injections or implants under the skin for contraception from the following:
$(i)$ Progestogens
(ii) Progestogen + estrogen combinations
(iii) Estrogen
(iv) Progestasert