According to census 2011, what is the decadal growth rate of population of Bihar

13.94%
11.50%
12.94%
25.40%

The correct answer is A. 13.94%.

The decadal growth rate of population of Bihar is the percentage change in the population of Bihar between the 2001 and 2011 censuses. The population of Bihar in 2001 was 82,878,796 and the population in 2011 was 103,804,637. The decadal growth rate is therefore 13.94%.

Option B is incorrect because the decadal growth rate of population of Bihar is not 11.5%.

Option C is incorrect because the decadal growth rate of population of Bihar is not 12.94%.

Option D is incorrect because the decadal growth rate of population of Bihar is not 25.4%.