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Surface Tension

Assertion :Oi...

Question

Assertion :Oil will form a film on the top of the water affecting the amount of light entering the water Reason: Oil is a polar molecule, and forms hydrogen bonds

A

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

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B

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

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C

Assertion is correct but Reason is incorrect

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D

Both Assertion and Reason are incorrect

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Solution

The correct option is C Assertion is correct but Reason is incorrect
Assertion:
Oil will form a film on the top of the water affecting the amount of light entering the water.
Reason:
Oil is a polar molecule, and forms hydrogen bonds.
Assertion is correct but Reason is incorrect.

Oil is a nonpolar molecule, which means that it does not form hydrogen bonds with water and therefore, does not dissolve in it, as it has a density lower than water it floats on water or forms a film above it.
So, the correct answer is 'Assertion is correct but Reason is incorrect'

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