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Formation of tiny water droplets during condensation is linked with which state change?

Answer and explanation

Correct answer: Gas to liquid

Direct answer: C, gas to liquid. Water vapour is water in the gaseous state. During condensation, the vapour loses energy as air cools or as conditions change, and molecules come closer together to form liquid water droplets. Clouds, fog and dew commonly involve this gas-to-liquid change. A is wrong because solid to gas is sublimation, such as ice changing directly into vapour. B describes deposition when vapour changes directly into a solid, as in the formation of frost under suitable conditions; it is not the usual change producing tiny liquid droplets. C is correct because gaseous water vapour becomes liquid water. D is the reverse process, evaporation, in which liquid water changes into vapour. The key exam step is to identify the starting substance as vapour and the ending substance as droplets: vapour is gas and droplets are liquid. Memory cue: condensation condenses gas into liquid; evaporation goes liquid to gas.

Related tags

GeographyCondensationState ChangeWater DropletsHumidityEvaporationAnd CondensationHumidity Evaporation And CondensationWater In The AtmosphereClass 12 Mcq

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