The first census specifically for Mizoram was conducted in the year:

The correct answer is: b) 1971

Mizoram was a part of Assam before it became a separate state in 1972. Therefore, the first census specifically for Mizoram was conducted in 1971.

The other options are incorrect because:

• Option a) is incorrect because the first census of India was conducted in 1872.
• Option c) is incorrect because the first census of Assam was conducted in 1881.
• Option d) is incorrect because the first census of India after Mizoram became a separate state was conducted in 1981.