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What is the role of condensation nuclei in fog formation?

Answer and explanation

Correct answer: They provide tiny bases for droplets

Correct answer: B. Condensation nuclei are very small particles in the atmosphere, such as dust, smoke, salt, or other aerosols. When moist air cools to saturation, water vapour can collect on these particles and form tiny droplets. A large group of such suspended droplets near the ground produces fog and reduces visibility. B is correct because the particles provide surfaces or starting points on which condensation can occur more readily. A is wrong because nuclei do not remove water vapour; they help it change into droplets. C is wrong because nuclei do not always warm air. D is wrong because fog generally reduces visibility rather than making it infinite. Memory cue: nuclei are “seeds” for droplets, not heaters or moisture destroyers.

Related tags

FogCondensation NucleiDroplet FormationVisibilityForms Of Condensation: DewFrostAnd MistForms Of Condensation Dew Frost Fog And MistWater In The AtmosphereGeography

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