Which of the following statement are not correct ?

1.	Which of the following statement are not correct ?
Answer» The standard value of absolute entropy of elementarysubstances is taken as zero. Work done in isothermal EXPANSIONIS GREATER than that in the adiabatic expansionfor same increase in volume. During adiabatic expansion of a real GAS,there is no change in the enthalpy of the system. Expansion against vaccum is very large and hence work done is also very large Solution :The standard value of absolute entropy of even elementary substance is not zero. It has a definite value. Hence, (a) is wrong.For expansion against vaccum, `P_(EXT) = 0`. So, work done is zero. Hence, ( d) is wrong. \

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