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In which condition is air considered closer to saturation?

Answer and explanation

Correct answer: Relative humidity is high

Direct answer: A, when relative humidity is high. Relative humidity compares the water vapour actually present in air with the maximum amount that air could hold at the same temperature, expressed as a percentage. A high value means the air is already holding a large proportion of its capacity, so it is near saturation. At saturation, the relative humidity is 100 percent under the stated conditions. B is not correct because saturation does not require temperature to be exactly zero; air can approach saturation at many temperatures. C is not correct because still air alone does not determine its moisture content. D is not correct because the absence of dust does not measure how much vapour the air contains. A helpful warning is that relative humidity depends on both moisture and temperature, not on temperature alone.

Related tags

GeographyRelative HumiditySaturationWater VapourHumidityEvaporationAnd CondensationHumidity Evaporation And CondensationWater In The AtmosphereClass 12 Mcq

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