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In thermodynamic processes which of the following statements is not true?

1. In an isochoric process pressure remains constant
2. In an isothermal process the temperature remains constant
3. In an adiabatic process PVγ = constant
4. In an adiabatic process the system is insulated from the surroundings

Correct answer: In an isochoric process pressure remains constant

Solution

In an isochoric process, the volume remains constant, not the pressure. Therefore, option A is incorrect.

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