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Question

Which is valid at absolute zero Temperature ?

A
KE of the gas becomes zero, but molecular motion does not become zero
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B
KE of the molecules becomes zero and the molecular motion also becomes zero
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C
KE of the gas decreases but does not become zero
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D
None of the above
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Solution

The correct option is A KE of the molecules becomes zero and the molecular motion also becomes zero
As we know,
The translational kinetic energy for one mole of an ideal gas is 32RT.
So at absolute zero kelvin, it becomes zero.
KE of the molecules becomes zero and the molecular motion also becomes zero.

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