Mass Transfer
The Hatta number is important in

Gas absorption with chemical reaction
Multicomponent distillation
Gas absorption without chemical reaction
Binary distillation

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

Pr = Sc = 1; total mass, momentum and thermal diffusivity will be the same
Both A & B
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

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Mass Transfer
The term "cooling range" in a cooling tower refers to the difference in the temperature of

None of the listed here
Hot water entering the tower and the wet bulb temperature of the surrounding air
Cold water leaving the tower and the wet bulb temperature of the surrounding air
Hot water entering the tower and the cooled water leaving the tower

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