Entropy change for an irreversible process taking system and surrounding together is :

zero

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positive

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negative

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can not be predicted

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Solution

The correct option is B positive
The change in entropy for a system and its surroundings is always positive for an irreversible process. In general, the total entropy - and therefore the disorder - always increase in an irreversible process. Keeping these considerations in mind, we can state the second law of thermodynamics as follows:

“The total entropy of an isolated system that undergoes a change can never decrease.”

Furthermore, if the process is irreversible, then the total entropy of an isolated system always increases. In a reversible process, the total entropy of an isolated system remains constant.

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