Mass Transfer
Leaching of uranium ore and gold ore is done in

None of these
Bollman extractor
Pachuka tanks
Centrifugal extractor

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

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

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