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

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Mass Transfer
Channelling is most severe

In dumped packing of regular units
At very high liquid flow rate
In towers packed randomly with crushed solids
In towers packed with stacked packing

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