GATE ME 2015 Set 2 — Question 55

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NAT+2 / -0MediumCarnot Cycle & EntropyLaws & PropertiesThermodynamicsIdeal & Real Gas Behaviour

Thermodynamics → Laws & Properties → Carnot Cycle & Entropy

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One kg of air (R=287 J/kg-KR = 287\text{ J/kg-K}) undergoes an irreversible process between equilibrium state 1 (20 C,0.9 m320\text{ }^\circ\text{C}, 0.9\text{ m}^3) and equilibrium state 2 (20 C,0.6 m320\text{ }^\circ\text{C}, 0.6\text{ m}^3). The change in entropy s2s1s_2 - s_1 (in J/kg-K) is ___________
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