Statement-I: Heat given to an ideal gas under isothermal conditions is used completely to do external work.
Statement-II: The change in internal energy in a thermo dynamic process is independent of the path.

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Statement 1 is true and Statement 2 is true

Statement 1 is true and Statement 2 is false

Statement 1 is false and Statement 2 is true

Both statement 1 and 2 are false.

answer is A.

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Detailed Solution

Heat given to an ideal gas under isothermal conditions is used completely to do external work because internal energy does not change.

The change in internal energy in a thermo dynamic process is independent of the path because it is a state function.

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