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Question

Which among the following is a state function?

A
Internal energy
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B
Irreversible expansion work
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C
Irreversible compression work
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D
Heat
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Solution

The correct option is A Internal energy
State functions are those which depend only on the initial and the final state of the system and are independent of the path taken.
Internal energy is a state function whereas, work done (reversible or irreversible) and heat are examples of path function.

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