Consider the following rivers : ​ 1. Brahmani ​ 2. Nagavali ​ 3. Subarnarekha ​ 4. Vamsadhara ​ Which of the above rise from the Eastern Ghats? ​

The correct answer is B.

The Eastern Ghats are discontinuous hill ranges running along the east coast from Odisha through Andhra Pradesh and Tamil Nadu. Several east-flowing rivers begin in these hills, and the Nagavali and Vamsadhara are the two standard examples in this list.

• Nagavali (2): rises in the Eastern Ghats in the Kalahandi hills of Odisha and flows southeast into Andhra Pradesh before reaching the Bay of Bengal.
• Vamsadhara (4): also rises in the Eastern Ghats of Odisha and drains eastward into the Bay of Bengal near the Odisha-Andhra border.
• Brahmani (1): is not an Eastern Ghats river. It is formed by the confluence of the Sankh and South Koel on the Chota Nagpur plateau in Sundargarh district.
• Subarnarekha (3): rises near Ranchi on the Chota Nagpur plateau, not in the Eastern Ghats.

Core concept: river origin and physiography. Linking a river to its source landform is basic prelims material and also helps in Mains GS-1 geography and inter-state water disputes.

Trap: Odisha rivers get lumped together with the Eastern Ghats because they flow through the state. Check the source region, not the state the river passes through.