The correct options are
A The process of a government counting the population of its country is called a census.
B Karnataka has a population of 6,11,30,704 according to the 2011 Census.
C The first census was held in India in 1872.
D In India, the census is held once in every ten years.
The process of a government counting the population of its country is called a census. In India, the first census was held in 1872. Censuses have been held regularly every tenth year. Karnataka has a population of 6,11,30,704 according to the 2011 census. Out of these, 3,10,57,742 are male and 3,00,72,662 are female.