Detailed Explanation:

The Chuar Revolt was a tribal uprising by the Chuar community (forest-dwelling tribes) in Bengal Presidency (including parts of present-day Bihar and West Bengal) against oppressive British land revenue policies and restrictions on forest rights.

The revolt's first major phase began in 1798–1799, marking organized resistance against colonial exploitation. A second phase occurred later during 1831–1833, but the initial outbreak is historically recorded from 1798.

Therefore, the Chuar Revolt began in 1798, making Option 2 the correct answer.