Which among the following is not a tributary of the Brahmaputra river?
- A.Teesta
- B.Siang
- C.Tons
- D.Manas
Show answer
Correct answer: C. Tons
Explanation
The correct answer is C, Tons. The Tons is a tributary of the Yamuna in the Ganga system, rising in the Garhwal Himalaya, and has nothing to do with the Brahmaputra basin. Option A is wrong as an answer because the Teesta, which drains Sikkim and north Bengal, does join the Brahmaputra, doing so in Bangladesh. Option B is wrong because the Siang, also called the Dihang, is the name the Brahmaputra itself carries in Arunachal Pradesh and is treated as its head stream, so it belongs to the system. Option D is wrong because the Manas, which comes down from Bhutan through the Manas national park, is one of the major north-bank tributaries of the Brahmaputra in Assam. The other tributaries worth remembering are the Subansiri, the Kameng, the Dibang and the Lohit, the last two giving the river its Assam name at Sadiya.