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In which state is water vapour present in the atmosphere?

Answer and explanation

Correct answer: Gaseous state

Correct answer: A, gaseous state. Water vapour is water whose particles are spread apart and move freely, so it behaves as a gas. It is usually invisible in the atmosphere and forms an important part of atmospheric moisture and humidity. When water receives heat, liquid water can evaporate and become water vapour. When vapour cools sufficiently, it can condense into liquid droplets. A is correct because vapour specifically means the gaseous form of a substance. B is incorrect because liquid water forms droplets, rain, fog, or cloud droplets after condensation. C is incorrect because ice, frost, and snow are solid forms of water. D is incorrect because plasma is a highly ionised state and is not the ordinary atmospheric form meant here. Memory cue: vapour means gas; condensation changes vapour into liquid.

Related tags

Water VapourAtmospheric HumidityGaseous StatePhase ChangeGeographyHumidityEvaporationAnd CondensationHumidity Evaporation And CondensationWater In The Atmosphere

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