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Which of the following statement is false for an isothermal expansion

Which of the following statement is false for an isothermal expansion of an ideal gas

Options

(a) Average kinetic energy of the molecules increases
(b) Number of molecules per unit volume decreases
(c) Pressure of the gas decreases
(d) Volume of the gas increases

Correct Answer:

Average kinetic energy of the molecules increases

Explanation:

As E∝T. Since in isothermal process temperature remains constant.Hence Kinetic energy will also remain constant.

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