Which part of the Constitution of India deals with special provisions to SCs, STs, OBCs and Anglo-Indians ?

Part 16 (Article 330 to 342) deals with special provisions to certain Classes. Part 6 (Article 152to 237) deals with the provision to The States. Part 18 (Article 352 to 360) deals with the provision to Emergency. Part 14A (Article 323A to 323B) deals with the provision to Tribunals.