Q.

What happens during sublimation?

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a

Kinetic energy increases. 

b

 Kinetic energy decreases. 

c

No movement of particles. 

d

None of these

answer is B.

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Detailed Solution

Sublimation is the conversion of a substance from a solid to a gaseous state without its becoming liquid.

Sublimation involves overcoming the inter-molecular force of attraction which happens when the molecules get sufficient kinetic energy to break free and hence kinetic energy increases.

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