Mass Transfer
When the __________ the relative humidity of air decreases, despite an increase in the absolute humidity.

Pressure falls
Temperature falls
Temperature rises
Pressure rises

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Mass Transfer
When the liquid phase and vapour phase of a binary system obeys Raoult's and Dalton's law respectively, the relative volatility is the ratio of

Vapour pressure of component A to the total pressure
Vapour pressure of component A to that of component B
Vapour pressure of component A to the partial pressure of A
Partial pressure of component A to the total pressure

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