In which year was the National Commission for Minorities Act established?

The National Commission for Minorities Act was passed by Parliament in 1992 (Act No. 19 of 1992, dated 17 May 1992). This Act converted the earlier non-statutory Minorities Commission — set up by a Government of India resolution in 1978 — into a statutory body. The first statutory National Commission for Minorities was constituted under this Act in 1993. Hence the correct year of the Act is 1992.