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The temperature at which condensation begins when air cools down is called what?

Answer and explanation

Correct answer: Dew point

Direct answer: B, dew point. The dew point is the temperature to which air must cool, at a given pressure and water-vapor content, for it to become saturated. Further cooling can cause water vapor to condense into liquid droplets, such as dew or fog, or into ice under suitable conditions. A, the boiling point, is the temperature at which a liquid changes rapidly into gas; it is the opposite type of phase change from condensation. C, the melting point, is where a solid changes into a liquid. D, the freezing point, is where a liquid changes into a solid. Thus only B describes the beginning of condensation in cooling air. Memory cue: dew point is the point at which dew can begin.

Related tags

Dew PointCondensationAtmospheric MoistureWater CycleHydrological CycleThe Living WorldBiologyClass 11 Mcq

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