Assertion :Solids in finely divided state act as good adsorbents. Reason: Adsorption is a surface phenomenon.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
The accumulation of molecular species at the surface rather than in the bulk of a solid or liquid is termed adsorption.
Adsorption is essentially a surface phenomenon.
So, solids in a finely divided state, have a large surface area and they act as good adsorbents.
Here, both Assertion and reason are correct but the reason for Solid in finely divided state acting as good adsorbents is because of the large surface area and hence reason is not the correct explanation for the assertion.

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