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InterviewSolution
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Which of the following expressions is not acceptable? (i) `Delta P = P_(f) - P_(i)` (ii) `Delta_(w) = w_(f) - w_(i)` (iii) `Delta q = q_(f) - q_(i)` (iv) `Delta U = U_(f) - U_(i)`A. (i),(ii)B. (ii),(iii)C. (iii),(iv)D. (i),(iv) |
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Answer» Correct Answer - B We cannot write `Delta w = w_(f) - w_(i)` because work is not a state function. Thus, work done not only depends on the initial state and final state, but also depends on how we carry out the process. Similarly, we cannot write `Delta q = q_(g) - q_(i)` because heat is not a state function. Like work, the heat associated with a given process depends on how process is carried out. |
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