Correct answer: (b) 2 only
Explanation
- A
1 and 3 only
(a) 1 and 3 only. Teesta does not share the Brahmaputra’s source, and it meets the Brahmaputra in Bangladesh rather than entering the Bay of Bengal on the India–Bangladesh border. Both 1 and 3 fail.
- B
2 only
(b) 2 only. The Rangeet (Rangit) rises in Sikkim and joins the Teesta. That tributary fact is correct; 1 and 3 are not. This is the official key.
- C
2 and 3 only
(c) 2 and 3 only. Statement 3 is wrong on the Bay-of-Bengal border mouth. Not the key.
- D
1, 2 and 3
(d) 1, 2 and 3. Source and mouth claims are false.
Summary. Official key is (b) 2 only. Teesta rises in the eastern Himalaya (Tso Lhamo / Pauhunri region of Sikkim), not at the Brahmaputra’s Tibetan source. Rangeet is a major Sikkim tributary of the Teesta. After Jalpaiguri the river enters Bangladesh and joins the Brahmaputra (Jamuna)–Padma system rather than meeting the Bay exactly on the India–Bangladesh shore. Only the Rangeet statement stands.
Same topic · past papers
UPSC has asked this before
These previous-year questions sit on the same topic. Open one to practise the earlier ask.
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2026 · Q25 · General Studies · 2 marks
Identify the river of the Indian sub-continent on the basis of the following information: 1. It has an antecedent drainage system. 2. It flows through three countries. 3. It originates in the Tibetan Plateau and is an important river for irrigation. 4. It does not form distributaries. Select the answer from the following: -
2016 · Q28 · General Studies · 2 marks
Which of the following is/are tributary/tributaries of Brahmaputra? 1. Dibang 2. Kameng 3. Lohit Select the correct answer using the code given below