A diatomic gas is enclosed in a piston-cylinder arrangement at a pressure of 3 bar and 300 K. The cylinder has a volume of 1.5 m3. The process undergoes isothermal expansion to 3 m3. If the gas has a gas-constant as 1.486 KJ/Kg. using, In2 = 0.693, entropy change during the above process in kJ/kg is:

A diatomic gas is enclosed in a piston-cylinder arrangement at a press

1.	A diatomic gas is enclosed in a piston-cylinder arrangement at a pressure of 3 bar and 300 K. The cylinder has a volume of 1.5 m3. The process undergoes isothermal expansion to 3 m3. If the gas has a gas-constant as 1.486 KJ/Kg. using, In2 = 0.693, entropy change during the above process in kJ/kg is:
A.	1.03
B.	1.2
C.	1.65
D.	1.15
Answer» B. 1.2

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