Mass Transfer Prandtl number for water at 20°C is about 0.7 70 7 150 0.7 70 7 150 ANSWER DOWNLOAD EXAMIANS APP
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 None of these Liquid-gas interface Gas film Liquid film None of these Liquid-gas interface Gas film Liquid film ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer An alkaline solution is used to reduce the concentration of carbon dioxide in a stream from 10% to 0.1% by absorption with irreversible chemical reaction. The overall number of transfer units based on gas phase is 0.001 9.21 4.605 100 0.001 9.21 4.605 100 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer An aqueous solution of methanol is to be distilled in a tray column. High pressure steam is available as a source of heat. For a given reflux ratio and overhead composition, two options are being explored; (i) a reboiler is used and (ii) no reboiler is used but steam is fed directly to the bottom of the column. As compared to option (i), in option (ii) Less number of trays are required Composition of the residue remains unchanged More number of trays are required and the residue composition is more dilute in methanol More number of trays are required but the residue composition remains unchanged Less number of trays are required Composition of the residue remains unchanged More number of trays are required and the residue composition is more dilute in methanol More number of trays are required but the residue composition remains unchanged ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Which of the following operations does not involve leaching? Dissolving sugar from the cells of the beet Removing nicotine from its water solution by kerosene Dissolving pharmaceutical products from bark or roots Dissolving gold from ores Dissolving sugar from the cells of the beet Removing nicotine from its water solution by kerosene Dissolving pharmaceutical products from bark or roots Dissolving gold from ores ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer In case of liquids, the binary diffusivity is proportional to (where, T = temperature) 1/T T² T √T 1/T T² T √T ANSWER DOWNLOAD EXAMIANS APP
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