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Physics Thermodynamics Mix MCQ (Single Correct)

For a real gas, the force of interaction between molecules of a gas is different from force of interaction between molecules of the walls of the container and gas molecules (both gas and the container are in thermodynamic equilibrium). This indicates that:

A
Pressure near the walls of the container is different from pressure inside the bulk of the gas but distribution of the molecules inside the container is uniform.
B
Pressure is uniform throughout the container but distribution of the molecules is different for two regions.
C
Both pressure and distribution of molecules is uniform throughout the container.
D
Both pressure and distribution of molecules is different for the two regions.

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Verified by Experts
The correct answer is:
B

Due to the pressure difference, there would be systematic motion within the gas according to the

Newton's law. But as systematic motion is not possible, pressure must be uniform inside.

To make the pressure uniform inside, distribution of the molecules is changed.

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