Correct Answer: Option B) 2 & 3 only
Statement 1: Dibang River Bridge is the longest bridge across a river in India.This statement is incorrect.
The longest river bridge in India is the Dhola-Sadiya Bridge (also known as the Bhupen Hazarika Setu), which spans across the Lohit River in Assam. It is approximately 9.15 km long and was inaugurated in 2017.
Statement 2: The Brahmaputra carries heavy silt and is known for channel migration.This statement is correct.
The Brahmaputra River is known for carrying an enormous amount of silt and sediment. This characteristic, along with its high water volume, makes it prone to channel migration, where the river often changes its course. This phenomenon leads to frequent flooding and erosion along its banks.
Statement 3: Lohit and Dibang merge with Dihang to form the Brahmaputra.This statement is correct.
In India, the Brahmaputra is formed by the confluence of three major rivers: Lohit, Dibang, and Dihang (which is the name of the Tsangpo-Brahmaputra in India before the confluence). After these three rivers merge near Sadiya in Assam, the river is called the Brahmaputra.