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GATE Mechanical Engineering (ME) 2023 Shift 1 Solved Paper

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Question : 41

Total: 65

Which one of the following statements is FALSE?

For an ideal gas, the enthalpy is independent of pressure.
For a real gas going through an adiabatic reversible process, the process equation is given by 𝑃𝑉^𝛾 = constant, where P is the pressure, V is the volume and 𝛾 is the ratio of the specific heats of the gas at constant pressure and constant volume.
For an ideal gas undergoing a reversible polytropic process 𝑃𝑉^1.5 = constant, the equation connecting the pressure, volume and temperature of the gas at any point along the process is ‌
P
R
=‌
mT
V
, where 𝑅 is the gas constant and 𝑚 is the mass of the gas.
Any real gas behaves as an ideal gas at sufficiently low pressure or sufficiently high temperature.

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