Mass Transfer
A binary mixture of benzene and cyclohexane is separated by

Extractive distillation
Solvent extraction
Ordinary distillation
Flash vaporisation

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Mass Transfer
In saturated gas, the

None of the listed here
Partial pressure of vapour equals the vapour pressure of the liquid at room temperature
Vapour is in equilibrium with the liquid at the gas temperature
Vapour is in equilibrium with the liquid at the room temperature

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