Thermodynamics

JEE Main level, single correct, medium

70 of 190

Question 70 of 190

Match List-I with List-II.
List-IList-II(A)Isothermal(I)ΔW(work done)=0(B)Adiabatic(II)ΔQ(supplied heat)=0(C)Isobaric(III)ΔU(change in internalenergy≠0(D)Isochoric(IV)ΔU=0\begin{array}{|l|l|l|l|} \hline & \text{List-I} & & \text{List-II} \\ \hline \text{(A)} & \text{Isothermal} & \text{(I)} & \Delta \mathrm{W} \text{(work done)} =0 \\ \hline \text{(B)} & \text{Adiabatic} & \text{(II)} & \Delta \mathrm{Q} \text{(supplied heat)} =0 \\ \hline \text{(C)} & \text{Isobaric} & \text{(III)} & \begin{array}{l}\Delta \mathrm{U} \text{(change in internal} \\ \text{energy} \neq 0\end{array} \\ \hline \text{(D)} & \text{Isochoric} & \text{(IV)} & \Delta \mathrm{U}=0 \\ \hline\end{array}
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Answer: (C) (A)-(IV), (B)-(II), (C)-(III), (D)-(I)

(A) Isothermal →ΔT=0→ΔU=0\rightarrow \Delta \mathrm{T}=0 \rightarrow \Delta \mathrm{U}=0 (IV)
(B) Adiabatic →ΔQ=0\rightarrow \Delta \mathrm{Q}=0 (II)
(C) Isobaric →ΔP=0→ΔU≠0\rightarrow \Delta \mathrm{P}=0 \rightarrow \Delta \mathrm{U} \neq 0 (III)
(D) Isochoric →ΔV=0→Δ W=0(I)\rightarrow \Delta \mathrm{V}=0 \rightarrow \Delta \mathrm{~W}=0(\mathrm{I})

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