Mass Transfer As the reflux ratio in a distillation coloumn is increased from the minimum, the Slope of the operating line in stripping section decreases Number of plates decreases very slowly first and then more and more rapidly Total cost first decreases and then increases Liquid flow increases while the vapor flow decreases for a system Slope of the operating line in stripping section decreases Number of plates decreases very slowly first and then more and more rapidly Total cost first decreases and then increases Liquid flow increases while the vapor flow decreases for a system ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer If G = insoluble gas in gas stream and L = non-volatile solvent in liquid stream, then the slope of the operating line for the absorber is None of these L/G G/L Always < 1 None of these L/G G/L Always < 1 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Use of packed towers for distillation is generally limited to the Vacuum distillation Multicomponent distillation Small sizes High pressure operation Vacuum distillation Multicomponent distillation Small sizes High pressure operation ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer In a packed absorption tower, if the equilibrium and operating lines are both straight lines, then the ratio, HETP/HTUOG __________ the absorption factor. Increases with increase in Is one at unity value of Neither A nor B Both A and B Increases with increase in Is one at unity value of Neither A nor B Both A and B ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer In case of steam distillation, the steam leaving the liquid is not completely saturated with distillate vapour, because Saturated steam is used for steam distillation Temperature is less Total pressure is less Mixing of steam with the material being vaporised is not so intimate as to result in equilibrium condition Saturated steam is used for steam distillation Temperature is less Total pressure is less Mixing of steam with the material being vaporised is not so intimate as to result in equilibrium condition ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Stacked packing compared to dumped packing Gives lower pressure drop Provides poorer contact between the fluids Both A & B Gives higher pressure drop Gives lower pressure drop Provides poorer contact between the fluids Both A & B Gives higher pressure drop ANSWER DOWNLOAD EXAMIANS APP
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