The provisions of the sixth Schedule of Indian Constitution are applicable in which of the following states?

The correct answer is A) Tripura. The Sixth Schedule (Article 244(2) and Article 275(1)) provides for Autonomous District Councils in the tribal areas of four states: Assam, Meghalaya, Tripura and Mizoram. Tripura's tribal areas are run by the Tripura Tribal Areas Autonomous District Council, set up in 1979 under this Schedule.

• Sikkim (B) is wrong. Sikkim is governed by Article 371F, inserted by the 36th Amendment in 1975 when it became a full state. It is not under the Sixth Schedule.
• Nagaland (C) is wrong. Nagaland has special provisions under Article 371A, added by the 13th Amendment in 1962. Its tribal customary law is protected there, not through the Sixth Schedule.
• D is wrong because Sikkim and Nagaland are excluded, so "All of the above" cannot hold.

The core concept is the difference between the Fifth Schedule (Scheduled Areas, governed by the Governor) and the Sixth Schedule (autonomous district councils with law-making and judicial powers over tribal areas). This connects to Mains GS-II on tribal rights, decentralisation and the Northeast's special status.

Trap: aspirants assume every Northeast state falls under the Sixth Schedule. Nagaland, Sikkim, Manipur and Arunachal have separate Article 371 provisions, so match each state to its specific article.