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MCQEasyJEE Main 2025 · 28 January, Shift 2Internal Energy & Enthalpy

Chemistry Question from JEE Main 2025 · 28 January, Shift 2

An ideal gas undergoes a cyclic transformation starting from point A and coming back to the same point by tracing the path A→B→C→D→A as shown in the three cases below. Choose the correct option regarding ΔU\Delta U:

Three PV diagrams labeled Case-I, Case-II and Case-III showing cyclic paths A to B to C to D to A with pressure and volume scales marked.
  • A

    ΔU(Case-III)>ΔU(Case-II)>ΔU(Case-I)\Delta U(\text{Case-III}) > \Delta U(\text{Case-II}) > \Delta U(\text{Case-I})

  • B

    ΔU(Case-I)=ΔU(Case-II)=ΔU(Case-III)\Delta U(\text{Case-I}) = \Delta U(\text{Case-II}) = \Delta U(\text{Case-III})

  • C

    ΔU(Case-I)>ΔU(Case-II)>ΔU(Case-III)\Delta U(\text{Case-I}) > \Delta U(\text{Case-II}) > \Delta U(\text{Case-III})

  • D

    ΔU(Case-I)>ΔU(Case-III)>ΔU(Case-II)\Delta U(\text{Case-I}) > \Delta U(\text{Case-III}) > \Delta U(\text{Case-II})

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