Agricultural Engineering > GATE 2021 > Psychrometrics
Molecular masses of water and air are 18.02 and 28.97 kg (kg mol)⁻¹, respectively. Air in a room is at 40 °C under a total pressure of 101.3 kPa absolute and contains water vapour at a partial pressure of 4.0 kPa. If saturated vapour pressure of water at 40 °C is 7.37 kPa, the relative humidity of this air in per cent is [round off to 2 decimal places]
Correct : 53.25
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