Assertion :It becomes difficult to open and shut the wooden doors and windows during rainy season. Reason: Wooden doors and windows imbibe water in rainy season and thus their volume is increased.

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 A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
Wooden doors and windows adsorb water in humid rainy season and increase in their volume so that they are hard to open or close. If a dry piece of wood is placed in water, it swells and increases its volume. During imbibition, the water molecules get tightly adsorbed and become immobilised.

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