Q. Consider the following statements:

1. The general elevation of the Central Highlands ranges between 800-2,000 m above the mean sea level.
2. An eastern extension of the Central Highland is formed by the Rajmahal hills.
3. Most of the tributaries of the river Yamuna have their origin in the Amarkantak.
4. The Banas is the only significant tributary of river Chambal that originates from the Aravalli in the west.

Which of the above statements is / are correct?
Answer: Only 2 and 4
Notes: The Central Highlands generally rise between 700-1,000 m above mean sea level, not 800-2,000 m. Most Yamuna tributaries originate in the Vindhyan and Kaimur ranges, not Amarkantak. The Rajmahal hills are an eastern extension of the Central Highland, and Banas is the only major Chambal tributary originating from the Aravalli in the west. Thus, only 2 and 4 are correct.