Identify the state quantity among the following

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q-w

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q+w

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q/w

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Solution

The correct options are
B q-w
C q+w
Both work and heat are path functions. Their values depends on the path chosen to reach a particular state.
However, the change in internal energy is equal to the sum of heat and work. It is a state function. Its value is independent of the path chosen to reach a particular state.

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