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According to kinetic theory of gases, for a diatomic molecule which is (are) not correct.

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The pressure exerted by the gas is directly proportional to the mean speed of the molecule

The pressure exerted by the gas is directly proportional to the root mean square speed of the molecule.

The root mean square speed of the molecule is inversely proportional to the temperature.

The mean transitional kinetic energy of the molecule is proportional to the absolute temperature.

answer is A.

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Detailed Solution

As shown by the equation KE = 3/2kT, the molecule's mean translational kinetic energy is proportional to the absolute temperature.

The speed and rate of molecular collisions affect how much pressure the gas exerts.

The molecule's root mean square speed is

$U_{rms} : U_{av} : U_{mp} = \sqrt{\frac{3 RT}{M}} : \sqrt{\frac{8 RT}{π M}} : \sqrt{\frac{2 RT}{M}} = \sqrt{3} : \sqrt{\frac{8}{π}} : \sqrt{2} = 1.2248 : 1.1284 : 1$

The correct answer is A, B, C.

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