Which stage acts as a bridge between childhood and adulthood?

What is the objective of Reproductive and Child Health Care $(RCH)$ programs?

Which one of the following is tested by the technique of amniocentesis?

According to the $1991$ census,the number of females per $1000$ males is:

An ideal contraceptive should be:
$I$. User-friendly
$II$. Easily available
$III$. Effective
$IV$. Interfering with coitus
$V$. Expensive and effective

All the following are uses of amniocentesis,but one is a misuse. Which one is a misuse?