Mass Transfer
In case of steam distillation, the steam leaving the liquid is not completely saturated with distillate vapour, because

Mixing of steam with the material being vaporised is not so intimate as to result in equilibrium condition
Saturated steam is used for steam distillation
Total pressure is less
Temperature is less

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Mass Transfer
In a counter-current liquid extractor

Only one of the liquids may be pumped at any desired rate
Liquid's flow rate depends upon the temperature and pressure
Both liquids flow at fixed rate
Both liquids can have any desired flow rate

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Mass Transfer
Which of the following processes is not an example of adsorption applied to gaseous separations?

Recovery of valuable solvent vapors from dilute mixture with air and other gases
Decolouration of yellow glycerene
Dehumidification of air and gas
Removal of objectionable odour and impurities from industrial gases

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