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Q75 (IAS/2022) Geography › Indian Physical Geography › Himalayan physiography Official Key

Consider the following pairs : Peak Mountains 1. Namcha Barwa - Garhwal Himalaya 2. Nanda Devi - Kumaon Himalaya 3. Nokrek - Sikkim Himalaya Which of the pairs given above is/are correctly matched ?

Result
Your answer: —  ·  Correct: B
Explanation

The correct answer is Option 2 (2 only) because only the second pair is geographically accurate according to the regional classification of the Himalayas.

  • Pair 1 is incorrect: Namcha Barwa is located in the Arunachal Himalayas (Tibet-China border region), marking the easternmost point where the Brahmaputra takes a sharp turn. The Garhwal Himalayas are situated much further west in Uttarakhand.
  • Pair 2 is correct: Nanda Devi is the highest peak located entirely within India, situated in the Kumaon Himalaya range in Uttarakhand. This region lies between the Satluj and Kali rivers.
  • Pair 3 is incorrect: Nokrek is the highest peak of the Garo Hills in Meghalaya (part of the Shillong Plateau), not the Sikkim Himalayas. The Sikkim Himalayas are known for peaks like Kanchenjunga.

Therefore, only Nanda Devi is correctly matched with its respective mountain range.

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Don’t just practise – reverse-engineer the question. This panel shows where this PYQ came from (books / web), how the examiner broke it into hidden statements, and which nearby micro-concepts you were supposed to learn from it. Treat it like an autopsy of the question: what might have triggered it, which exact lines in the book matter, and what linked ideas you should carry forward to future questions.
Q. Consider the following pairs : Peak Mountains 1. Namcha Barwa - Garhwal Himalaya 2. Nanda Devi - Kumaon Himalaya 3. Nokrek - Sikkim Himal…
At a glance
Origin: Mixed / unclear origin Fairness: Moderate fairness Books / CA: 6.7/10 · 0/10
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This is a classic 'Map-Mental-Model' question. It rewards candidates who don't just memorize lists but visualize locations relative to state boundaries and river basins. It combines core Physical Geography (Himalayan subdivisions) with Environment (Biosphere Reserves locations like Nokrek). If you knew your Biosphere Reserves, this was a sitter.

How this question is built

This question can be broken into the following sub-statements. Tap a statement sentence to jump into its detailed analysis.

Statement 1
Which Himalayan subrange contains Namcha Barwa?
Origin: Direct from books Fairness: Straightforward Book-answerable
From standard books
Geography of India ,Majid Husain, (McGrawHill 9th ed.) > Chapter 2: Physiography > 5. The Eastern Himalaya > p. 16
Presence: 5/5
“These lie between the Tista and the Brahmaputra rivers, covering a distance of about 720 km with an area of 67,500 sq km. The Eastern Himalaya occupy the state of Arunachal Pradesh (India) and Bhutan. In this part, the Himalaya rise very rapidly from the plains of Assam, and the foothills of Shiwaliks are very narrow. The Eastern Himalaya include the Aka Hills, the Dafla Hills, Miri Hills, Abor Hills, Mishmi Hills, and Namcha Barwa (7756 m). It has a number of mountain passes among which Bomdi-La, Bom La, Tunga, Yonggyap, Diphu, Pangsau, Tse-La, Dihang, Debang (Arunachal Pradesh) are the most important.”
Why this source?
  • Names Namcha Barwa (7756 m) as included in the Eastern Himalaya
  • Describes the Eastern Himalaya as occupying Arunachal Pradesh and Bhutan, linking the peak to that subrange
CONTEMPORARY INDIA-I ,Geography, Class IX . NCERT(Revised ed 2025) > Chapter 3: Drainage > The Brahmaputra River System > p. 20
Presence: 4/5
“The Brahmaputra rises in Tibet east of Mansarowar lake very close to the sources of the Indus and the Satluj. It is slightly longer than the Indus, and most of its course lies outside India. It flows eastwards parallel to the Himalayas. On reaching the Namcha Barwa (7757 m), it takes a 'U' turn and enters India in Arunachal Pradesh through a gorge. Here, it is called the Dihang and it is joined by the Dibang, the Lohit, and many other tributaries to form the Brahmaputra in Assam.”
Why this source?
  • Places Namcha Barwa at the location where the Brahmaputra takes a U-turn before entering Arunachal Pradesh
  • Locates the peak at the eastern end of the Himalayan system, reinforcing its Eastern Himalaya position
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