Mass Transfer The surface renewal frequency in Danckwerts model of mass transfer is given by (KL: mass transfer co-efficient) KL²/DA √(KL².DA) KL².DA KL/DA² KL²/DA √(KL².DA) KL².DA KL/DA² ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Which of the following provides maximum contact surface for a liquid-vapour system? Wetted wall column Bubble-cap plate column Packed tower Seive-plate column Wetted wall column Bubble-cap plate column Packed tower Seive-plate column ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer In stripping section of continuous distillation column, the None of these Liquid is stripped of high boiler Liquid is enriched with high boiler Vapour is stripped of low boiler None of these Liquid is stripped of high boiler Liquid is enriched with high boiler Vapour is stripped of low boiler ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Humidification involves mass transfer between a pure liquid phase and a fixed gas, which is At a fixed temperature Soluble in the liquid Non-ideal in nature Insoluble in the liquid At a fixed temperature Soluble in the liquid Non-ideal in nature Insoluble in the liquid ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Flights in a rotary dryer are provided to Lift and shower the solids thus exposing it thoroughly to the drying action of the gas None of these Increase the residence time of the solid Reduce the residence time of solid Lift and shower the solids thus exposing it thoroughly to the drying action of the gas None of these Increase the residence time of the solid Reduce the residence time of solid 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
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