Per year growth in India's population according to the $1991$ census is (in $\%$)

According to the $1991$ census,the minimum percent of population increase was in which state?

At present,the total population of the world is about:

Choose the correct causes for the population growth.
$I$. Decline in death rate
$II$. Rapid increase in $MMR$ and $IMR$
$III$. Rapid decline in $MMR$ and $IMR$
$IV$. Increase in the number of people in the reproductive age group
$V$. Rapid increase in the death rate

According to the $2001$ census,the population growth rate was approximately: (in $;\%$)

Assertion: The sex ratio of Kerala is the highest in India.
Reason: In countries like India,the population is increasing at a rapid rate.