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Which statement about heat in evaporation and condensation is correct?

Answer and explanation

Correct answer: Heat is absorbed in evaporation and released in condensation

Direct answer: D. During evaporation, molecules at the liquid surface need energy to escape into the gas state. They absorb latent heat from the liquid and its surroundings, so evaporation can produce cooling. During condensation, water vapour changes back into liquid water or ice. Molecules lose energy as they come closer together, and the latent heat stored during evaporation is released to the surrounding air or surface. This energy transfer is important in atmospheric processes because condensation can warm nearby air and support cloud development and convection. A is incorrect because heat is not destroyed; energy is transferred. B reverses the two processes. C is incorrect because latent heat is central to both processes. Memory cue: evaporation takes heat in; condensation gives heat back.

Related tags

GeographyLatent HeatEvaporation CondensationHumidityEvaporationAnd CondensationHumidity Evaporation And CondensationWater In The AtmosphereClass 12 Mcq

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