A) For an isothermal change PV = constant
B) In an isothermal process the change in internal energy must be equal to the work done
C) For an adiabatic change \[\frac{{{P}_{2}}}{{{P}_{1}}}={{\left( \frac{{{V}_{2}}}{{{V}_{1}}} \right)}^{\gamma }}\], where \[\gamma \] is the ratio of specific heats
D) In an adiabatic process work done must be equal to the heat entering the system
Correct Answer: A
Solution :
Since \[PV=RT\] and \[T=\]constant; \[\therefore \ PV=\]constant.
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