Mass Transfer
The vapour pressure exerted by the moisture contained in a wet solid depends upon the

All of these
Nature of the solid
Nature of the moisture
Temperature

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

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

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Mass Transfer
For the air water system under ambient conditions, the adiabatic saturation temperature and the wet bulb temperature are nearly equal, because

Water has a high latent heat of evaporation
Solubility of the components of air in water is very small
Lewis number is close to unity
They are always equal under all circumstances

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