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Introduction

When we cool ...

Question

When we cool a gas below its condensation point, the KE of its molecules will

A

increase

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B

decrease

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C

remains the same

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D

first increase then decrease

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Solution

The correct option is B decrease
When we cool a gas below its condensation point, the kinetic energy of gas decreases and particles come closer and their inter molecules forces increases and they bond with each other and converts to liquid.
Hence, the answer is decrease.

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