Mass Transfer
Solvent extraction is the terminology applied to the liquid-liquid extraction, which is preferred for the separation of the components of liquids, when

One of the liquid components has very high affinity towards the solvent
Viscosity of liquid components is very high
One of the liquid components is heat sensitive
Extracting solvent is cheaply & abundantly available

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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
Dehumidification of air and gas
Removal of objectionable odour and impurities from industrial gases
Decolouration of yellow glycerene

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