Thermodynamics Ques 21

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

[2009]

(a) In an isochoric process volume remains constant

(b) In an isothermal process the temperature remains constant

(c) In an adiabatic process $PV \gamma=$ constant

(d) In an adiabatic process the system is insulated from the surroundings

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Answer:

Correct Answer: 21.(a)

Solution:

In an isochoric process volume remains constant whereas pressure varies in an isobaric process.