The clouds remain suspended in the sky due to :

Viscosity of air

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Viscosity of water in cloud

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Negligile weight of cloud

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Sun's gravitational force on cloud

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Solution

The correct option is B Negligile weight of cloud
Clouds are made up of very tiny water droplets, with diameter of order of few micro-meters. Density of cloud is very less and pressure is low, the upward push of buoyancy by the air keeps cloud floating.

So negligible weight and high volume keeps the cloud suspended.

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