Mass Transfer In case of liquids, the binary diffusivity is proportional to (where, T = temperature) √T 1/T T² T √T 1/T T² T ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer According to the Fenske equation, what will be the minimum number of plates required in a distillation column to separate an equimolar binary mixture of components A and B into an overhead fraction containing 99 mol% A and a bottom fraction containing 98 mol% B? Assume that relative volatility (αAB = 2) does not change appreciably in the coloumn. 12 10 6 8 12 10 6 8 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Though, theoretically the adsorption & desorption isotherms is expected to coincide but sometimes at least a part of the isotherms does not coincide and this phenomenon is known as adsorption hysterisis. In such cases, the desorption equilibrium pressure is __________ that obtained for adsorption. Higher than Lower than Either same or higher than Same as Higher than Lower than Either same or higher than Same as ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Which of the following assumes constant molal vaporisation and overflow? Ponchan-Savarit method Plate absorption column Enthalpy concentration method McCabe-Thiele method Ponchan-Savarit method Plate absorption column Enthalpy concentration method McCabe-Thiele method 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 Fenske equation determines the Minimum number of theoretical plates Optimum reflux ratio Maximum number of ideal plates Height of the distillation column Minimum number of theoretical plates Optimum reflux ratio Maximum number of ideal plates Height of the distillation column ANSWER DOWNLOAD EXAMIANS APP
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