Assertion :Liquids expand on heating. Reason: Bimetallic strip is used in fan.

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 correct

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Solution

The correct option is D Both Assertion and Reason are correct
When a liquid is heated, its atoms vibrate faster about their fixed points. In liquids the bonds between separate molecules are usually less tight they expand more than solids.

Bimetallic strip thermostat is used to maintain desired temperature in a system like fan and in a number of devices.
Hence, Both Assertion and Reason are correct

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(a) Assertion and reason both are correct and reason is correct explanation of assertion.
(b) Assertion and reason both are wrong statements.
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