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Which is not true in case of an ideal gas?

1. It cannot be converted into a liquid
2. There is no interaction between the molecules
3. All molecules of the gas move with same speed
4. At a given temperature, PV is proportional to the amount of the gas

Correct answer: All molecules of the gas move with same speed

Solution

In an ideal gas, molecules have a range of speeds at a given temperature, following the Maxwell-Boltzmann distribution. Hence, not all molecules move with the same speed.

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