Mass Transfer Mass transfer co-efficient varies as DAB0.5, according to the __________ theory. Surface renewal Film None of these Penetration Surface renewal Film None of these Penetration 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) 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 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 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Flash distillation is Used for multicomponent systems like crude refining Same as simple distillation Most useful for handling binary systems Same as differential distillation Used for multicomponent systems like crude refining Same as simple distillation Most useful for handling binary systems Same as differential distillation ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The mass diffusivity, the thermal diffusivity and the eddy momentum diffusivity are same for, NPr = NSc = __________ 3 1 2 4 3 1 2 4 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Which of the following parameters remains almost constant during adiabatic saturation of unsaturated air? Dry bulb temperature Dew point None of these Wet bulb temperature Dry bulb temperature Dew point None of these Wet bulb temperature ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Stacked packing compared to dumped packing Gives lower pressure drop Both A & B Gives higher pressure drop Provides poorer contact between the fluids Gives lower pressure drop Both A & B Gives higher pressure drop Provides poorer contact between the fluids ANSWER DOWNLOAD EXAMIANS APP
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