Which states in India have the highest and lowest population,respectively?

How many persons are added to the Indian population per year?

$A$: Population of India crossed one billion in May $2000$.
$R$: It is the result of a rapid decline in death rate,maternal mortality rate $(MMR)$,and infant mortality rate $(IMR)$,as well as an increase in the number of people in the reproductive age.

Which of the following is the most convincing reason for increased population growth in a country?

Population explosion is:

Infant mortality rate is minimum in: