Which of the following is a once-a-week pill with very few side effects and high contraceptive value?

What is true about 'Saheli'?
$I$. Developed at $CDRI$,Lucknow
$II$. Contains a steroidal preparation
$III$. 'Once-a-week' pill
$IV$. Many side effects
$V$. High contraceptive value
$VI$. Very few side effects
$VII$. Low contraceptive value

Explain the difference between non-medicated $IUD$ and copper-releasing $IUD$.

What happens after a vasectomy?

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 the world's first non-hormonal oral contraceptive pill for females,developed by scientists at the Central Drug Research Institute $(CDRI)$ in Lucknow,India?