Which of the following is not an assumption of the kinetic theory of gases?

Collision of gas particles are perfectly elastic.

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Gas particles have negligible volume.

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At high pressure, gas particles are difficult to compress.

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A gas consists of many identical particles which are in continual motion.

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Solution

The correct option is C At high pressure, gas particles are difficult to compress.
The statement, 'At high pressure, gas particles are difficult to compress.' is not an assumption of the kinetic theory of gases. In the postulates of the kinetic theory of gases, reference is made to low-pressure case but there is no reference to high-pressure case.

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