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Question

The process by which a gas directly changes into solid-state on cooling, without changing first into the liquid state is called


A

condensation

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B

deposition

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C

freezing

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D

sublimation

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Solution

The correct option is B

deposition


The correct option is (B) deposition.

The direct conversion of gas into solid without changing first into the liquid state is called deposition.

Examples : Frost (Frost is the deposition of water vapour from humid air on to a solid surface) and soot (deposited on the walls of chimneys)


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