One mole of a monoatomic ideal gas is taken through a cycle ABCDA as shown in the P-V diagram. List-II gives the characteristics involved in the cycle. Match them with each of the processes given in L

Question

One mole of a monoatomic ideal gas is taken through a cycle ABCDA as shown in the P-V diagram. List-II gives the characteristics involved in the cycle. Match them with each of the processes given in List-I.

diagram

List - I	List - II
(P) $A \to B$	(1) Internal energy decreases
(Q) $B \to C$	(2) Internal energy increases
(R) $C \to D$	(3) Heat is lost by the gas
(S) $D \to A$	(4) Heat is gained by the gas
	(5) Work is done on the gas

TestHub · Accepted Answer

A → B: T and V decrease: Δ U < 0 (1), work done on gas (5), heat lost (3): P → 1 , 3 , 5 . B → C: T decreases at constant V: Δ U < 0 (1), no work, heat lost (3): Q → 1 , 3 . C → D: T and V increase: Δ U > 0 (2), heat gained (4): R → 2 , 4 . D → A: T returns to initial value ( Δ U = 0 ) while V decreases: heat lost (3), work on gas (5): S → 3 , 5 . Option (C).

Physics - Thermodynamics Question with Solution | TestHub

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