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Which is wrong according to kinetic Theory

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The average K.E of the molecules is directly proportional to the absolute temperature
All the molecules in a gas have the same K.E
Collisions between molecules are perfectly elastic collisions
Pressure is due to impact of the molecules on the walls of the container

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detailed solution

Correct option is B

According to Kinetic Theory of gases, all the gas molecules do not have same speed. Due to this reason for gases average K.E to be considered.

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