Mass Transfer
Relative volatility does not change appreciably with the change in

None of these
Vapour pressure of either component
Total pressure
Temperature

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

Hot water entering and the cooled water leaving the cooling tower
None of these
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

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