1.

 Which is the correct statement [MP PMT 1993]

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. \[\Delta {{U}_{\text{I}}}=\Delta {{U}_{\text{II}}}\]
D.  In an adiabatic process work done must be equal to the heat entering the system
Answer» B. In an isothermal process the change in internal energy must be equal to the work done


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