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What is air called when it is completely filled with water vapour?

Answer and explanation

Correct answer: Saturated air

Correct answer: A, saturated air. Air is called saturated when it contains the maximum amount of water vapour possible at a particular temperature and pressure. It is not necessarily visibly wet; it simply cannot accept much more vapour under the same conditions. If saturated air cools, its capacity decreases and some vapour may condense into droplets, forming dew, fog, or clouds. B is incorrect because dry air contains little water vapour. C describes air containing dust particles, not its moisture state. D describes air with little or no movement; stillness does not tell us how much vapour the air contains. A is correct because saturation refers specifically to reaching the moisture-holding limit. Temperature must be remembered: the maximum capacity changes with temperature. Memory cue: saturated air is ‘full’ of vapour, just as a full container cannot accept more water.

Related tags

GeographySaturated-AirHumidityCondensationEvaporationAnd CondensationHumidity Evaporation And CondensationWater In The AtmosphereClass 12 Mcq

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