Mass Transfer Pore size of the molecular seive 5A is __________ mm. 5 0.5 0.05 50 5 0.5 0.05 50 ANSWER DOWNLOAD EXAMIANS APP
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 D/2a Dependent on the Reynolds number D/a Proportional to √D D/2a Dependent on the Reynolds number D/a Proportional to √D ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Can the efficiency of a plate in the distillation tower be greater than 100%? Yes Normally not; but is possible if infinite number of plates are put Yes ; if the reflux ratio is maximum Never Yes Normally not; but is possible if infinite number of plates are put Yes ; if the reflux ratio is maximum Never ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Chemisorption compared to physical absorption has Lower adsorption rate None of these Increased utilisation of stagnant zones of the liquid phase Lower capacity of the solvent for the solute gas Lower adsorption rate None of these Increased utilisation of stagnant zones of the liquid phase Lower capacity of the solvent for the solute gas ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer A pure drug is administered as a sphere and as a cube. The amount of drug is the same in the two tablets. Assuming that the shape and size do not influence the mass transfer, the ratio of rate of dissolution in water at t = 0 for the cubic to spherical tablet is 1.94 1.04 0.54 1.24 1.94 1.04 0.54 1.24 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer To increase the absorption factor, (where, G = gas flow rate, S = solvent flow rate) Increase both 'G' and 'S' Increase 'S' and decrease 'G' Decrease both 'G' and 'S' Increase 'G' and decrease 'S' Increase both 'G' and 'S' Increase 'S' and decrease 'G' Decrease both 'G' and 'S' Increase 'G' and decrease 'S' ANSWER DOWNLOAD EXAMIANS APP
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