Geomorphic Processes

5 Questions
  1. 1
    Consider the following statements :
    1. Statement I : In the context of effect of water on rocks, chalk is known as a very permeable rock whereas clay is known as quite an impermeable or least permeable rock.
    2. Statement II : Chalk is porous and hence can absorb water.
    3. Statement III : Clay is not at all porous.
    Which one of the following is correct in respect of the above statements?
    UPSC CSE I - 2025
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    Answer: C. Only one of the Statements II and III is correct and that explains Statement I

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  2. 2
    Consider the following statements :
    1. Statement-I : Rainfall is one of the reasons for weathering of rocks.
    2. Statement-II : Rain water contains carbon dioxide in solution.
    3. Statement-III : Rain water contains atmospheric oxygen.
    Which one of the following is correct in respect of the above statements ?
    UPSC CSE I - 2024
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    Answer: A. Both Statement-II and Statement-III are correct and both of them explain Statement-I

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  3. 3
    Consider the following information:
    Region Name of the mountain range Type of mountain
    1. Central Asia Vosges Fold mountain
    2. Europe Alps Block mountain
    3. North America Appalachians Fold mountain
    4. South America Andes Fold mountain
    In how many of the above rows is the given information correctly matched?
    UPSC CSE I - 2024
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    Answer: B. Only two

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  4. 4
    Consider the following:
    1. Electromagnetic radiation
    2. Geothermal energy
    3. Gravitational force
    4. Plate movements
    5. Rotation of the earth
    6. Revolution of the earth
    Which of the above are responsible for bringing dynamic changes on the surface of the earth?
    UPSC CSE I - 2013
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    Answer: D. 1, 2, 3, 4, 5 and 6

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  5. 5
    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
    UPSC CSE I - 2011
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    Answer: B. Syntaxial bending of geologically young Himalayas

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