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This question has statement I and II. Of...

This question has statement I and II. Of the four choices given after the Statements , choose the one that best describes the two statements.
(1) Statement- I is true , Statement- II is true , Statement-II is a correct explanation of Statement-I
(2) Statement-I is true , Statement- II is true .Statement- II is not a correct explanation of Statement-I
(3)Statement- I is true ,Statement- II is false.
(4)Statement- I is false ,Statement- II is true.
Statement- I: Internal energy change is zero if the temperature is constant, irrespective of the process being cyclic or non cyclic,
Statement- II: `dU=nC_vdT` for all processes and is independent of path .

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