खालीलपैकी कोणते विधान बरोबर नाही ?

The correct answer is Option D (The First Backward Commission was appointed in 1953 with B.P. Mandal as Chairman.).

Key Points:
• Constitutional Definitions and Backward Classes Commissions:
• Option 1 & 2 are correct statements: The Constitution contains no specific substantive definitions for what constitutes 'Scheduled Castes', 'Scheduled Tribes', or 'Backward Classes'; Article 366(24) and 366(25) merely refer back to groups notified by the President under Article 341 and 342, and 'backward class' is completely undefined.
• Option 3 is a correct statement: The Anglo-Indian community is specifically defined in Article 366(2).
• Option 4 is incorrect (Answer): The First Backward Classes Commission was appointed in 1953 under the chairmanship of Kaka Kalelkar (submitted report in 1955). B.P. Mandal chaired the Second Backward Classes Commission, which was appointed in 1979 by the Morarji Desai government.
• Key Takeaway: The 1st Backward Classes Commission (1953) was headed by Kaka Kalelkar; the 2nd (1979) was headed by B.P. Mandal.