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

None of these
Total pressure
Vapour pressure of either component
Temperature

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Mass Transfer
Heat load in a cooling tower

Means the amount of heat thrown away (KCal/hr.) by the cooling tower
Both A & B
Neither A nor B
Is equal to the number of kg, of water circulated times the cooling range

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Mass Transfer
If a two phase system is in physical equilibrium; then it means that, the

All of these
Total pressure throughout the liquid phase is equal to that throughout the vapor phase
Escaping tendency of each component from the liquid phase to the vapor phase is exactly equal to that from vapor phase to liquid phase
Temperature of the liquid phase is equal to that of the vapor phase

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