Match the List-I with List-II List-I (Isothermal process for ideal gas system) List-II Work done (Vf Vi) A. Reversible expansion I. w = 0 B. Free expansion II. w = –nRT ln f i V V C. Irreversible ex

Question

Match the List-I with List-II List-I (Isothermal process for ideal gas system) List-II Work done (Vf > Vi) A. Reversible expansion I. w = 0 B. Free expansion II. w = –nRT ln f i V V C. Irreversible expansion III. w = –pex (Vf – Vi) D. Irreversible compression IV. w = –pex (Vi – Vf) Choose the correct answer from the options given below :

(A) A-IV, B-I, C-III, D-II
(B) A-IV, B-II, C-III, D-I
(C) A-I, B-III, C-II, D-IV
(D) A-II, B-I, C-III, D-IV

Prashant Kotian · Accepted Answer

Correct answer: D. (A) WRev. = – gas P dV WRev. Isot. Exp. = – nRT ln f i V V       (A)  (II) (B) Free expansion Wirrev. = – Pext V Pext = 0 W = 0 (B)  (I) (C) Irreversible expansion Wirrev. = – Pext V Wirrev. = – Pext (Vf – Vi) (C)  (III) (D) Irreversible compression Wirrev. = – Pext V Wirrev. = – Pext (Vi – Vf)

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