Mass Transfer The binary diffusivity in gases and liquids vary respectively as T3/2 and √T √T and T3/2 T and T3/2 T3/2 and T T3/2 and √T √T and T3/2 T and T3/2 T3/2 and T ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer McCabe-Thiele method Is more accurate than Ponchan-Savarit method Uses molal units for material and energy balance Uses weight fractions to express liquid and vapour composition Can use any type of units Is more accurate than Ponchan-Savarit method Uses molal units for material and energy balance Uses weight fractions to express liquid and vapour composition Can use any type of units 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 More number of trays are required and the residue composition is more dilute in methanol Composition of the residue remains unchanged More number of trays are required but the residue composition remains unchanged Less number of trays are required More number of trays are required and the residue composition is more dilute in methanol Composition of the residue remains unchanged More number of trays are required but the residue composition remains unchanged ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The amount of steam required per unit quantity of distillate in case of steam distillation will be reduced by Lowering the total pressure Raising the temperature Neither A nor B Both A & B Lowering the total pressure Raising the temperature Neither A nor B Both A & B ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The commonly used solvent in supercritical extraction is Methyl ethyl ketone Carbon dioxide Carbon tetrachloride Water Methyl ethyl ketone Carbon dioxide Carbon tetrachloride Water ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Operating velocity in a packed tower is usually __________ the flooding velocity. More than Equal to Twice Half More than Equal to Twice Half ANSWER DOWNLOAD EXAMIANS APP
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