GATE ME 2019 Set 1 — Question 34

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NAT+1 / -0EasyIdeal & Real Gas BehaviourLaws & PropertiesThermodynamicsCarnot Cycle & Entropy

Thermodynamics → Laws & Properties → Carnot Cycle & Entropy

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Question

Air of mass 1 kg1\text{ kg}, initially at 300 K300\text{ K} and 10 bar10\text{ bar}, is allowed to expand isothermally till it reaches a pressure of 1 bar1\text{ bar}. Assuming air as an ideal gas with gas constant of 0.287 kJ/kgK0.287\text{ kJ/kg}\cdot\text{K}, the change in entropy of air (in kJ/kgK\text{kJ/kg}\cdot\text{K}, round off to two decimal places) is _______
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