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UPSC 2011: The Brahmaputra, Irrawady and Mekong rivers originate in Tibet and flow through narrow and parallel mountain ranges in their upper reaches. Of these rivers, Brahmaputra makes a "U" turn in its course to flow into India. This "U" turn is due to
(a)uplift of folded Himalayan series
(b)syntaxis bending of geologically young Himalayas
(c)geo-tectonic disturbance in the tertiary folded mountain chains
(d)Both (a) and (b) above
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Not attemptedCorrect Answer: (b) syntaxis bending of geologically young Himalayas
Near Namcha Barwa, the eastern Himalaya abruptly changes trend; this syntaxial bending forces the Tsangpo to loop sharply southward, creating the distinctive ‘U’-turn before entering India as the Brahmaputra. It is not a generic uplift of the entire folded series nor a separate Tertiary disturbance. ([selfstudyhistory.com](https://selfstudyhistory.com/2015/01/22/gs-prelims-previous-years-paper-2011-part-2/?utm_source=openai))
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What is the correct answer to this UPSC 2011 Geography question?▼
The correct answer is option (b): syntaxis bending of geologically young Himalayas. Watch the detailed video explanation in our Sherlocking Prelims course on UnlockIAS.
Which year was this Indian Physical Geography question asked in UPSC Prelims?▼
This question was asked in UPSC CSE Prelims 2011, GS Paper 1, as Question 97. It falls under Geography > Indian Physical Geography.
What is the difficulty level of this UPSC question?▼
This question is rated "difficult". It is a challenging question that demands deep subject knowledge and analytical thinking.
How many UPSC Prelims questions have been asked from Indian Physical Geography?▼
UPSC has asked 45 questions from Indian Physical Geography (under Geography) across multiple years. Visit the topic page to see the full list and year-wise trends.