Assertion :The gases exert pressure. Reason: Molecules exert pressure when they collide with the walls of the container in which they are taken.

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
Gas exert pressures the same way that everything else does, by colliding with the sides of the container. Since gas molecules are very spread out from eachother as they move around and bounce off the sides of the container they push on it according to Newtons First Law of Motion, thus causing a pressure on the container.

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