UPSC CSE Prelims 2021

Correct Option (b):

The Nagavali and Vamsadhara rivers originate in the Eastern Ghats.

• The Nagavali River rises from the Eastern Ghats in the Kalahandi district of Odisha.
• The Vamsadhara River originates in the Eastern Ghats, specifically in the Gajapati district of Odisha.

Both are significant east-flowing rivers that drain into the Bay of Bengal, characteristic of the Eastern Ghats physiography.

Incorrect Options:

• Brahmani River: This river is formed by the confluence of the Sankh and South Koel rivers. Both the Sankh and South Koel rivers originate in the Chotanagpur Plateau, not the Eastern Ghats.
• Subarnarekha River: The Subarnarekha River originates in the Chotanagpur Plateau, located in Jharkhand. It does not rise from the Eastern Ghats.