Mass Transfer Absorption (liquid-gas system) with evolution of heat as compared to isothermal absorption results in Large number of trays All of these Large minimum liquid to gas (L/G) ratio Decreased solute solubility Large number of trays All of these Large minimum liquid to gas (L/G) ratio Decreased solute solubility ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer As the reflux ratio, in a continuous counter-current extraction is increased, the number of stages Decrease Increase Remain unchanged Can either increase or decrease, depends on the system Decrease Increase Remain unchanged Can either increase or decrease, depends on the system ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Compound A is extracted from a solution of A + B into a pure solvent S. A Co-current unit is used for the liquid-liquid extraction. The inlet rate of the solution containing A is 200 moles of B/hr.m² and the solvent flow, rate is 400 moles of S/m². hr. The equilibrium data is represented by Y = 3X² , where Y is in moles of a A/moles of B and X is in moles A/moles of S. The maximum percentage extraction achieved in the unit is 0.7 0.25 0.9 0.5 0.7 0.25 0.9 0.5 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer In gas-liquid contact operation, the number of ideal stages, N = (xa - xb)/(xb - x*b) . This is true when the stripping factor 'S' is S = ∞ S > 1 S < 1 S = 1 S = ∞ S > 1 S < 1 S = 1 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer If the overall efficiency and Murphree plate efficiency are equal, then both the equilibrium and operating lines are Straight Neither A nor B Parallel Both A & B Straight Neither A nor B Parallel Both A & B ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Selectivity of the solvent used in solvent extraction should be > 1 1 < 1 > 1 1 < 1 ANSWER DOWNLOAD EXAMIANS APP
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