Mass Transfer
During bottling of cold drinks (e.g. Pepsi), the main resistance to mass transfer for the absorption of carbon dioxide in water lies in the

Liquid film
Gas film
Liquid-gas interface
None of these

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Mass Transfer
Bollman extractor

Is a static bed leaching equipment
Employs only counter-current extraction
Is used for extraction of oil from oilseed
Is a centrifugal extractor

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