Mass Transfer Penetration theory relates the average mass transfer co-efficient (K) with diffusivity (D) as K ∝ D K ∝ √D K ∝ D1.5 K ∝ D2 K ∝ D K ∝ √D K ∝ D1.5 K ∝ D2 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer During sensible cooling process Relative humidity decreases Wet bulb temperature decreases Relative humidity increases Both B and C Relative humidity decreases Wet bulb temperature decreases Relative humidity increases Both B and C ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The change in enthalpy, when a unit quantity of gas is absorbed by relatively large quantity of adsorbent (on which a definite concentration of the adsorbed gas already exists) is termed as the None of these Integral heat of adsorption Heat of wetting Differential heat of adsorption None of these Integral heat of adsorption Heat of wetting Differential heat of adsorption 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 0.9 0.5 0.25 0.7 0.9 0.5 0.25 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Diffusion in concentrated solutins differs from that in dilute solutions, because of the change in the __________ with the concentration of the solution. Neither A nor B Degree of ideality Both A & B Viscosity Neither A nor B Degree of ideality Both A & B Viscosity ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Which of the following unit operations makes use of Thiele-Geddes equation? Multicomponent absorption with chemical reaction Multicomponent distillation Solid-liquid extraction Liquid-liquid extraction Multicomponent absorption with chemical reaction Multicomponent distillation Solid-liquid extraction Liquid-liquid extraction ANSWER DOWNLOAD EXAMIANS APP
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