Mass Transfer Plate efficiency in a distillation column is reduced due to the __________ of liquid. Foaming All of these Weeping & dumping Entrainment Foaming All of these Weeping & dumping Entrainment ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer In batch distillation with constant reflux, overhead product composition __________ with time. Does not vary May increase on decrease, depends on the system Increases Decreases Does not vary May increase on decrease, depends on the system Increases Decreases ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer In a moderately sized packed absorption tower, channeling (which is most severe with stacked packings) can be minimised by taking the ratio of tower diameter to packing diameter > 4 :1 < 8 : 1 < 6:1 > 8:1 > 4 :1 < 8 : 1 < 6:1 > 8:1 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 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 Less number of trays are required More number of trays are required but the residue composition remains unchanged ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The Kundsen diffusivity is proportional to (where, T = absolute temperature) √T T⁴ T T² √T T⁴ T T² 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 Both A & B Neither A nor B Raising the temperature Lowering the total pressure Both A & B Neither A nor B Raising the temperature Lowering the total pressure ANSWER DOWNLOAD EXAMIANS APP
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