Mass Transfer Stage efficiency in a leaching process depends on the Vapour pressure of the solution Rate of diffusion of the solute through the solid and into the liquid Time of contact between the solid and the solution Both A & B Vapour pressure of the solution Rate of diffusion of the solute through the solid and into the liquid Time of contact between the solid and the solution Both A & B ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer In case of an absorber, the operating Line always lies above the equilibrium curve Velocity is more than the loading velocity Line can be either above or below the equilibrium curve Line always lies below the equilibrium curve Line always lies above the equilibrium curve Velocity is more than the loading velocity Line can be either above or below the equilibrium curve Line always lies below the equilibrium curve ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer For ethanol-water system, the lowering of distillate quality from 95% to 92% will cause __________ plate requirement. Marginal decrease in the number of No change in theoretical None of the listed here Major decrease in the number of Marginal decrease in the number of No change in theoretical None of the listed here Major decrease in the number of ANSWER DOWNLOAD EXAMIANS APP
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 If G = insoluble gas in gas stream and L = non-volatile solvent in liquid stream, then the slope of the operating line for the absorber is G/L L/G Always < 1 None of these G/L L/G Always < 1 None of these ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Weeping in a distillation column Results due to very high gas velocity Provides large interfacial surface for mass transfer Results due to very low gas velocity Increases tray efficiency Results due to very high gas velocity Provides large interfacial surface for mass transfer Results due to very low gas velocity Increases tray efficiency ANSWER DOWNLOAD EXAMIANS APP
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