- The northern boundary of the Peninsular Block is a regular line extending from Kachchh to the Yamuna and the Ganga, reaching the Rajmahal Hills and the Ganga Delta.
- The Karbi Anglong and the Meghalaya Plateau in the northeast, as well as Rajasthan in the west, are considered extensions of the Peninsular Block.
- The northeastern parts are separated from the Chotanagpur Plateau by the Malda fault in West Bengal.
Answer: Only 2 and 3
Notes: Statement 1 is incorrect; the northern boundary of the Peninsular Block is not a regular line but rather an irregular one. Statements 2 and 3 are correct: Karbi Anglong, Meghalaya Plateau, and Rajasthan are extensions of the block, and the Malda fault separates the northeastern parts from the Chotanagpur Plateau.
