Mass Transfer The mass transfer co-efficient for a solid sphere of radius 'a' dissolving in a large volume of quiescent liquid, in which D is the diffusivity of solute, is Proportional to √D D/2a D/a Dependent on the Reynolds number Proportional to √D D/2a D/a Dependent on the Reynolds number ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Smoke is an example of Liquid dispersed in gas Solid dispersed in liquid Solid dispersed in gas Gas dispersed in liquid Liquid dispersed in gas Solid dispersed in liquid Solid dispersed in gas Gas dispersed in liquid ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The ratio of Murphree plate efficiency to point efficiency is 1 in a __________ flow model. Both plug & perfectly mixed Perfectly mixed None of the listed here Plug Both plug & perfectly mixed Perfectly mixed None of the listed here Plug ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer H₂S is being absorbed in a gas absorber unit. The height of the transfer unit based on the overall mass transfer coefficient on the gas side is 0.4 m. The equilibrium data is given by, y = 1.5 x. The bulk concentration of H₂S has to be reduced from 0.05 to 0.001 mole fraction in the gas side. The height of the tower (in metres) corresponding to an operating line given by, y = 5x + 0.001 is 2 1.56 1 0.56 2 1.56 1 0.56 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Fractional solvent extraction Results in low interfacial tension None of the listed here Employs two solvents Employs only one solvent Results in low interfacial tension None of the listed here Employs two solvents Employs only one solvent ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer In case of an absorber, the operating Line can be either above or below the equilibrium curve Velocity is more than the loading velocity Line always lies below the equilibrium curve Line always lies above the equilibrium curve Line can be either above or below the equilibrium curve Velocity is more than the loading velocity Line always lies below the equilibrium curve Line always lies above the equilibrium curve ANSWER DOWNLOAD EXAMIANS APP
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