Match the columns. Column-I lists processes for ideal gases; symbols have their usual meaning.
List - I
List - II
(A) Isothermal
(P) $Δ U = 0$
(B) Isobaric
(Q) $Q = 0$
(C) Isochoric
(R) $W = 0$
(D) Adiabatic free expansion
(S) $Δ U = n C_{v} Δ T$

Question

Match the columns. Column-I lists processes for ideal gases; symbols have their usual meaning.

List - I	List - II
(A) Isothermal	(P) $Δ U = 0$
(B) Isobaric	(Q) $Q = 0$
(C) Isochoric	(R) $W = 0$
(D) Adiabatic free expansion	(S) $Δ U = n C_{v} Δ T$

TestHub · Accepted Answer

Isothermal: Δ T = 0 ⇒ Δ U = 0 (P); Δ U = n C v ​ Δ T also holds (S). Isobaric: only Δ U = n C v ​ Δ T in general (S). Isochoric: W = 0 (R) and Δ U = n C v ​ Δ T (S). Adiabatic free expansion: Q = 0 (Q), W = 0 (R), hence Δ U = 0 (P), and Δ U = n C v ​ Δ T holds (S).

Physics - Heat & Thermo Question with Solution | TestHub

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