Mass Transfer Gaseous diffusivity at atmospheric pressure is of the order of __________ cm²/second. > 10 5 to 10 1 1 to 5 > 10 5 to 10 1 1 to 5 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer __________ is used as an 'entrainer' for the separation of acetic acid-water mixture by distillation. Hexane Butyl acetate Benzol Furfural Hexane Butyl acetate Benzol Furfural 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) 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 More number of trays are required and the residue composition is more dilute in methanol ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Pick out the correct relationship. (where, Ri = internal reflux ratio Ro = external reflux ratio. ) (1 - Ro) = Ro/Ri (1 - Ri) = Ro/Ri (1 + Ri) = Ro/Ri (1 + Ro) = Ro/Ri (1 - Ro) = Ro/Ri (1 - Ri) = Ro/Ri (1 + Ri) = Ro/Ri (1 + Ro) = Ro/Ri ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Critical humidity of a solid salt means the humidity Both A and B Above Which it will always become dry and below which it will always stay damp Above which it will always become damp Below which it will always stay dry Both A and B Above Which it will always become dry and below which it will always stay damp Above which it will always become damp Below which it will always stay dry ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Back-trapping in a distillation column Increases tray efficiency Is desirable, as it provides improved vapour-liquid contact Reduces pressure drop Decreases tray efficiency Increases tray efficiency Is desirable, as it provides improved vapour-liquid contact Reduces pressure drop Decreases tray efficiency ANSWER DOWNLOAD EXAMIANS APP
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