Mass Transfer
Relative humidity is the ratio of the

Actual humidity to saturation humidity
Partial pressure of the vapour to the vapour pressure of the liquid at room temperature
None of these
Partial pressure of the vapour to the vapour pressure of the liquid at gas temperature

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Mass Transfer
In case of absorption with exothermic reaction, for fluids having

Pr = Sc ; there won
Both A & B
Pr = Sc = 1; total mass, momentum and thermal diffusivity will be the same
Pr = Sc; percentage change in heat and mass transfer flux will be the same for a given change in the degree of turbulence

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Mass Transfer
In saturated gas, the

None of the listed here
Partial pressure of vapour equals the vapour pressure of the liquid at room temperature
Vapour is in equilibrium with the liquid at the gas temperature
Vapour is in equilibrium with the liquid at the room temperature

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