1.

A thermo-dynamical system is changed from state \[({{P}_{1}},\,{{V}_{1}})\] to \[({{P}_{2}},\,{{V}_{2}})\] by two different process. The quantity which will remain same will be                                   [RPET 1999]

A.            \[\Delta \,Q\]                      
B.            \[\Delta \,W\]
C.            \[\Delta Q+\Delta W\]     
D.            \[\Delta Q-\Delta W\]
Answer» E.


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