Tsang Po and Jamuna are other names of which river?

Correct — D. This river is renamed in each country it crosses. It rises in Tibet as the Yarlung Tsangpo, cuts south through the Himalaya and enters Arunachal Pradesh as the Siang or Dihang.

On the Assam plain it is the Brahmaputra. Crossing into Bangladesh it becomes the Jamuna, and merges with the Ganga, called the Padma there, before reaching the sea.

Tsang Po and Jamuna are therefore two names for one river, which is option (d).

Why the others are wrong

• (a)
  Narmada — The Narmada rises at Amarkantak and flows west through a rift valley to the Gulf of Khambhat. It never leaves India and carries no second national name.
• (b)
  Indus — The Indus also rises in Tibet, but flows north-west and then through Pakistan to the Arabian Sea. It is never called the Jamuna.
• (c)
  Ganga — The Ganga rises at Gangotri and is called the Padma in Bangladesh, not the Jamuna. Its own tributary, the Yamuna, is a different river with a different spelling.

The Brahmaputra is the standard one-river-many-names question.

Yarlung Tsangpo in Tibet. Siang or Dihang in Arunachal Pradesh. Brahmaputra in Assam. Jamuna in Bangladesh.

It is one of the world's great sediment carriers and braids across a very wide bed in Assam, which is why Majuli, among the largest river islands anywhere, sits in it and why the valley floods each monsoon.

Its Assam tributaries — Subansiri, Jia Bharali, Dhansiri, Puthimari — are examinable in their own right.

Key facts

• The Brahmaputra is called the Yarlung Tsangpo in Tibet.
• It enters India in Arunachal Pradesh as the Siang or Dihang.
• In Bangladesh it is known as the Jamuna and merges with the Padma.
• Majuli, an island in the Brahmaputra in Assam, is among the largest river islands in the world.

Common traps

• Reading Jamuna as the Yamuna, which is a Ganga tributary and a different river
• Assuming a Tibetan name must belong to the Indus because that river also rises on the plateau

No directly related past PYQ was found.