Assertion :Water kept in an open vessel will quickly evaporate on the surface of the moon. Reason: The temperature at the surface of the moon is much higher than boiling point of water.

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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Assertion is incorrect, but Reason is correct

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Solution

The correct option is C Assertion is correct, but Reason is incorrect
Boiling point of a liquid varies directly with the external pressure.

Assertion : As gravitational force on the moon is very low compared to the Earth, water molecules can easily drift away from the surface. So it evaporates quickly. So, Assertion is Correct.

Reason: Due to very low Atmospheric pressure on moon, boiling point is also very low, lesser than the surface temperature of moon. So Reason is incorrect.

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