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Questions  >>  JEEMAIN and NEET  >>  Physics  >>  Class11  >>  Thermodynamics
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Q)

S1: For the process to be spontaneous, both $ \Delta G$ as well as $ \Delta S$ has to be less than zero.\[\] S2: For spontaneous change, $ \Delta S_{Total} > 0.$

$\begin {array} {1 1} (A)\;\text{If both S1 & S2 are correct and S2 is correct explanation of S1.} \\ (B)\;\text{If both S2 & S1 are correct but S2 is not correct explanation of S1.} \\ (C)\;\text{If S1 is correct but S2 is wrong.} \\ (D)\; \text{If S1 is wrong but S2 is correct.} \end {array}$

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A)
If both $ \Delta G$ and $ \Delta S$ are zero, then it doesn’t hold for the criterion of spontaneity ,i.e, $ -T \Delta S = \Delta G$
Ans : (D)
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