Which prominent mountain range of the Eastern Himalayas forms a major watershed in Arunachal Pradesh, separating the Lohit River basin from the Dibang River basin?

💡 Solution & Explanation

The Mishmi Hills are situated at the northeastern tip of Arunachal Pradesh, where the Himalayas take a sharp southward bend, forming a crucial physical barrier and watershed between the Lohit and Dibang river valleys. The Patkai Bum lies further south along the Myanmar border, while the Dafla and Abor hills are located further west in the state. Understanding these regional physiographic divisions is essential for analyzing the complex terrain and drainage systems of Northeast India.