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MCQEasyJEE Main 2026 · 24 January, Shift 1Internal Energy & Enthalpy

Chemistry Question from JEE Main 2026 · 24 January, Shift 1

Match the LIST-I with LIST-II for an isothermal process of an ideal gas system.

List-IList-IIWork done (Vf>Vi)A.Reversible expansionI.w=0B.Free expansionII.w=−nRTln⁡ ⁣(VfVi)C.Irreversible expansionIII.w=−Pex(Vf−Vi)D.Irreversible compressionIV.w=−Pex(Vi−Vf)\begin{array}{|c|l||c|l|} \hline \text{List-I} & & \text{List-II} & \text{Work done } (V_f > V_i) \\ \hline \text{A.} & \text{Reversible expansion} & \text{I.} & w = 0 \\ \text{B.} & \text{Free expansion} & \text{II.} & w = -nRT\ln\!\left(\dfrac{V_f}{V_i}\right) \\ \text{C.} & \text{Irreversible expansion} & \text{III.} & w = -P_{ex}(V_f - V_i) \\ \text{D.} & \text{Irreversible compression} & \text{IV.} & w = -P_{ex}(V_i - V_f) \\ \hline \end{array}

Choose the correct answer from the options given below:

  • A

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

  • B

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

  • C

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

  • D

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

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