Mass Transfer The expression, y(1 - x)/x(1 - y) is for Selectivity Murphree efficiency Absorption factor Relative volatility Selectivity Murphree efficiency Absorption factor Relative volatility ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer For a distillation column operating at minimum reflux, the Reflux ratio will be maximum Concentration of liquid and vapour leaving a plate will be same None of these Number of plates required will be maximum Reflux ratio will be maximum Concentration of liquid and vapour leaving a plate will be same None of these Number of plates required will be maximum ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer In case of absorption, both the operating and equilibrium lines will be straight for Dilute solutions and isothermal operation Dilute solutions None of these Isothermal operation Dilute solutions and isothermal operation Dilute solutions None of these Isothermal operation ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The binary diffusivity in gases and liquids vary respectively as T and T3/2 T3/2 and √T T3/2 and T √T and T3/2 T and T3/2 T3/2 and √T T3/2 and T √T and T3/2 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer McCabe-Thiele method Uses molal units for material and energy balance Can use any type of units Is more accurate than Ponchan-Savarit method Uses weight fractions to express liquid and vapour composition Uses molal units for material and energy balance Can use any type of units Is more accurate than Ponchan-Savarit method Uses weight fractions to express liquid and vapour composition 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 but the residue composition remains unchanged More number of trays are required and the residue composition is more dilute in methanol Composition of the residue remains unchanged Less number of trays are required More number of trays are required but the residue composition remains unchanged More number of trays are required and the residue composition is more dilute in methanol Composition of the residue remains unchanged ANSWER DOWNLOAD EXAMIANS APP
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