Mass Transfer At what value of reflux ratio, number of theoretical plates in a distillation column is minimum? ∞ < 1 1 ∞ < 1 1 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Wetted wall tower experiment determines the Molal diffusivity Mass transfer co-efficient None of these Volumetric co-efficient Molal diffusivity Mass transfer co-efficient None of these Volumetric co-efficient ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer With increase in temperature, the rate of leaching increases, because the Diffusivity of solute increases Thermal conductivity of solute increases Viscosity of solvent decreases None of these Diffusivity of solute increases Thermal conductivity of solute increases Viscosity of solvent decreases None of these 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 Composition of the residue remains unchanged Less number of trays are required 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 Composition of the residue remains unchanged Less number of trays are required More number of trays are required and the residue composition is more dilute in methanol ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Lewis number (Le) is Sc x Pr Pr x St St x Sh Sh x Pr Sc x Pr Pr x St St x Sh Sh x Pr ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer HETP is numerically equal to HTU, only when the operating line And equilibrium lines are parallel Lies below the equilibrium line Lies above the equilibrium line Is far from the equilibrium line And equilibrium lines are parallel Lies below the equilibrium line Lies above the equilibrium line Is far from the equilibrium line ANSWER DOWNLOAD EXAMIANS APP
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