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Which statement better describes the correct conditions for cloud formation?

Answer and explanation

Correct answer: Moisture, cooling and condensation nuclei help

Direct answer: A. Cloud formation needs moist air containing water vapour. The air must cool, often through rising and expansion, until it reaches saturation. Water vapour then condenses on tiny particles called condensation nuclei, such as suitable dust or salt particles, forming small droplets or ice crystals. B is wrong because hot, dry air lacks the moisture needed for clouds. C is wrong because water vapour is essential, not absent. D is wrong because lava and rock are not basic requirements for ordinary cloud formation. The exact process can vary, but moisture, cooling and condensation are the safe core ideas. Memory cue: “Moist air cools, then condenses.”

Related tags

Cloud FormationMoistureCoolingCondensation NucleiClouds And PrecipitationWater In The AtmosphereGeographyClass 12 Mcq

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