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Which condition is most helpful for condensation of water vapour?

Answer and explanation

Correct answer: Cooling

Correct answer: C, cooling. Condensation is the process in which water vapour changes into tiny liquid water droplets. Air can hold less water vapour as it cools. If moist air is cooled sufficiently, it reaches saturation, and the excess water vapour changes into droplets on suitable particles or surfaces. This is why cooling at night can produce dew and cooling near the ground can help produce fog. A is wrong because extreme heating generally increases evaporation and allows warmer air to hold more vapour. B is wrong because very dry air is not rich in water vapour and does not favour immediate condensation. C is correct because cooling is the basic condition that brings moist air to saturation. D is wrong because sunshine alone usually warms the surface and does not directly cause condensation. Memory cue: evaporation takes water into the air; cooling brings vapour back as droplets.

Related tags

GeographyCondensationCoolingWater-VapourHumidityEvaporationAnd CondensationHumidity Evaporation And CondensationWater In The AtmosphereClass 12 Mcq

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