First dose of $BCG$ vaccine is given at the time of
Birth
$6 \;months$ after birth
$8 \;months$ after birth
$10\; months$ after birth
“In the absence of environmental resistance the population grows in geometrical ratio when the food is given in arithmetical ratio''. This is
Which one of the following is an example of Hormone releasing $IUD$ ?
Average population density on earth is
Generally there was population growth rate increase in India, but in which of the following year there was decrease in population growth rate
The least densely populated state of India is