According to $1991$ census, rural population of India is
$70\%$
$76\%$
$41\%$
$57\%$
Which of the following methods is used during abortion?
Match the following columns
Column-I | Column- II |
$(A)$ Pill | $(1)$ Intra uterine device |
$(B)$ Condom | $(2)$ Prevents ovulation |
$(C)$ Vasectomy | $(3)$ Prevents sperms from reaching to cervix |
$(D)$ Cu - T | $(4)$ Semen contains no sperms |
Infant mortality rate is minimum in:
Exponential phase of human growth started about
Scientificstudy of human population is called