Which of the following is the oldest fold mountain range of India?
- A.Himalayas
- B.Aravalli
- C.Satpura
- D.Nilgiri
Correct answer
Explanation
The correct answer is B, Aravalli. The Aravalli range of Rajasthan and Haryana is an old or relict fold mountain, folded in the Precambrian era and worn down by erosion to low, rounded hills; Guru Shikhar on Mount Abu is its highest point. Option A is wrong because the Himalayas are young fold mountains, raised from the Tethys geosyncline when the Indian plate collided with the Eurasian plate, and they are still rising. Option C is wrong because the Satpura, like the Vindhya across the Narmada, is a block mountain formed by faulting, not by folding. Option D is wrong because the Nilgiri hills are residual mountains, left standing after the long erosion of the peninsular plateau. Old fold mountains such as the Appalachians and the Urals belong to the same class as the Aravalli.
Read the full article: Types of Mountains, Plateaus and Plains: Notes for Exams
Practice Questions
View allThe Vosges and the Black Forest, which stand on either side of the Rhine rift valley, are examples of:
- A.Fold mountains
- B.Volcanic mountains
- C.Block mountains
- D.Residual mountains
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Block mountains are formed by tensional forces that break the crust along faults; the block left standing between or beside the faults is called a horst and the sunken trough is a graben or rift valley.
Read the full explanation →Mount Kilimanjaro, the highest peak of Africa, is an example of which type of mountain?
- A.Volcanic mountain
- B.Fold mountain
- C.Block mountain
- D.Residual mountain
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Kilimanjaro in Tanzania is a dormant volcano built up by repeated eruptions of lava and ash around its vents, and at 5,895 metres it is the highest point in Africa.
Read the full explanation →Which plateau is the highest and the most extensive plateau in the world, and is called the Roof of the World?
- A.Plateau of Tibet
- B.Deccan plateau
- C.Patagonia plateau
- D.Loess plateau
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Lying between the Himalayas on the south and the Kunlun on the north, it is an intermontane plateau, the highest and the largest in the world, with an average elevation of about four and a half thousand metres, which is why it is called the Roof of the World.
Read the full explanation →The Deccan Trap of Maharashtra, from which the black regur soil has formed, is an example of which type of plateau?
- A.Intermontane plateau
- B.Lava plateau
- C.Piedmont plateau
- D.Loess plateau
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The Deccan Trap was built by fissure eruptions of highly fluid basalt lava towards the close of the Cretaceous period, which spread as sheet after sheet over a vast area of western and central India; the weathering of that basalt gives the black cotton soil, also called regur.
Read the full explanation →In the Northern Plain of India, which belt is made of coarse pebbles and is so porous that streams coming down from the hills disappear into it?
- A.Terai
- B.Bhangar
- C.Bhabar
- D.Khadar
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The Bhabar is a narrow belt of eight to sixteen kilometres along the foot of the Shiwaliks, laid with pebbles and gravel brought down by the rivers; it is so permeable that the smaller streams sink into it and vanish.
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