Mass Transfer
In McCabe-Thiele method, at infinite reflux ratio

Both the operating lines coincide with diagonal
Neither A nor B
Both A & B
The overhead product is minimum

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

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

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

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

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