According to the 2011 Census, the density of population of Bihar per sq km was:

Correct answer: (d) 1,106

Explanation

According to the 2011 Census, Bihar had a population density of 1,106 persons per sq km, the highest among India's major states and nearly three times the national average of 382. About 10.4 crore people live on 94,163 sq km of mostly fertile, densely farmed plain.

In 2001 Bihar's density was 881 persons per sq km.