Which of the following method of contraception has maximum chances of failure?
Rhythm/Periodic abstinence
Vasectomy
Condoms
$IUDs$
According to $1991$ census, the number of females per $1000$ males is
$NSEP$ stands for
When the $2 ^{nd}$ and the $3^{rd}$ dose of $DPT$ is given to a child?
$MTP$ is considered safe upto how many weeks of pregnancy?
Scientificstudy of human population is called