QUESTION

Hard

Physical Geography

Prelims 2025

Consider the following statements:

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.

Statement II: Chalk is porous and hence can absorb water.

Statement III: Clay is not at all porous.

Which one of the following is correct in respect of the above statements?

Select an option to attempt

Explanation

Statement I: Correct Chalk is permeable (water passes easily); clay is impermeable (water passes poorly).

Statement II: Correct Chalk is porous, with many small holes that hold water, making it permeable.

Statement III: Incorrect Clay is porous but with very tiny pores that restrict water flow; it is impermeable but not non-porous.

Correct Answer: Only Statements I and II are correct; Statement II explains Statement I.

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