Water evaporates under the atmosphere pressure. If now the same water is placed under vacuum, then the rate of evaporation will

Increase

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Decrease

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Remain unchanged

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Nothing can be decided

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Solution

The correct option is A Increase
In vacuum atmospheric pressure is zero; According to Le-chatlier's principle on decreasing pressure, volume increases so more water converts into gas (vapour). So rate of evaporation increases.

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By evaporation, the water returns to atmosphere.

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