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13. A system performs work

Δw when an amount of heat is ΔQ added to the system, the corresponding change in the internal energy is ΔU . A unique function of the initial and final states (irrespective of the mode of change) is

(a)    ΔQ                                  (b) Δw

(c) ΔU  and   ΔQ                   (d) ΔU

Ans. d

(7)

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