For 2 mole of He gas (assuming ideal behaviour), study P – V curve. [A P-V diagram is shown with points A(3 lit, 5 atm), B(6 lit, 5 atm), C(6 lit, 2 atm), and D(3 lit, 2 atm), forming a rectangular cy

Question

For 2 mole of He gas (assuming ideal behaviour), study P – V curve. [A P-V diagram is shown with points A(3 lit, 5 atm), B(6 lit, 5 atm), C(6 lit, 2 atm), and D(3 lit, 2 atm), forming a rectangular cycle with arrows indicating the direction A→B→C→D→A.] For the given system

Prashant Kotian · Accepted Answer

Correct answer: A,C,D. (i) Process AB  V increases, T increase T > 0, U > 0 (ii) Process BC  V decreases, T decrease T < 0. (iii) Process CD → pressure decreases, T decreases T < 0, Q < 0. (iv) Process DA  pressure increase, Q > 0. AITS-FT-X (Paper-2)-PCM(Sol.)-JEE(Advanced)/20 Ltd., FIITJEE House, 29-A, Kalu Sarai, Sarvapriya Vihar, New Delhi -110016, Ph 46106000, 26569493, Fax 26513942 website: www.fiitjee.com 9

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