The longitudinal valleys known as Duns lie between which two ranges?
- A.Greater Himalaya and Lesser Himalaya
- B.Shiwalik and Lesser Himalaya
- C.Karakoram and Ladakh range
- D.Zaskar and Greater Himalaya
Correct answer
Explanation
The correct answer is B, Shiwalik and Lesser Himalaya. Duns are flat-floored longitudinal valleys formed where rivers coming out of the Lesser Himalaya were held up behind the rising Shiwalik and filled the depression with gravel and silt. Dehra Dun in Uttarakhand is the largest, and Kotli Dun and Patli Dun are the other examples exams name. Option A is wrong because the valley belt between the Greater and the Lesser Himalaya includes the Kashmir valley, which is filled with Karewa lake deposits rather than being called a Dun. Option C is wrong because the Karakoram and the Ladakh range lie in the Trans-Himalayan zone north of the Greater Himalaya, where the Indus flows between them. Option D is wrong because the Zaskar range also belongs to the Trans-Himalayan system and holds no Duns.
Read the full article: Himalayas and Northern Plains: Ranges, Passes and Belts
Practice Questions
View allWhich of the following is the northernmost and highest of the three parallel ranges of the Himalayas?
- A.Shiwalik
- B.Himachal or Lesser Himalaya
- C.Himadri or Greater Himalaya
- D.Purvanchal
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The Himadri is the innermost and northernmost of the three parallel Himalayan ranges, with an average height of about 6,000 metres.
Read the full explanation →The Karewa deposits of the Kashmir valley are best known for the cultivation of which crop?
- A.Saffron
- B.Tea
- C.Rubber
- D.Jute
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Karewas are thick beds of glacial clay, silt and other lake sediments laid down in the Kashmir valley, which lies between the Pir Panjal and the Greater Himalaya.
Read the full explanation →Which belt of the Northern Plains is a narrow strip of pebbles at the foot of the Shiwaliks, in which streams disappear from the surface?
- A.Terai
- B.Bhabar
- C.Bhangar
- D.Khadar
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The Bhabar is a narrow belt about 8 to 16 kilometres wide, laid along the foot of the Shiwalik range, where the rivers leaving the hills drop their coarsest load.
Read the full explanation →The older alluvium of the Northern Plains, lying above the flood level and containing lime nodules called kankar, is known as:
- A.Khadar
- B.Bhabar
- C.Bhangar
- D.Terai
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Bhangar is the older alluvial deposit of the Northern Plains. It forms terraces that stand above the present flood level, so fresh silt no longer reaches it, and long leaching has left calcareous concretions called kankar in its profile.
Read the full explanation →The Nathu La pass connects which Indian state with Tibet?
- A.Himachal Pradesh
- B.Uttarakhand
- C.Arunachal Pradesh
- D.Sikkim
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Nathu La lies in eastern Sikkim on the old trade route from Gangtok to Lhasa and is one of the passes on India's border with the Tibet region of China; Jelep La, also in Sikkim, is the other.
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