Mass Transfer The main reason for dividing a tall packed tower into series of small towers is to Avoid channeling Avoid flooding Reduce liquid hold up Minimise the overall pressure drop Avoid channeling Avoid flooding Reduce liquid hold up Minimise the overall pressure drop ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The solvent used in liquid-liquid extraction should have __________ less than one. Both A & B Selectivity Distribution co-efficient Neither A nor B Both A & B Selectivity Distribution co-efficient Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer At equilibrium the concentration of water in vapour phase (C*)in kg/m³ of air space and the amount of water (m) adsorbed per kg of dry silica gel are related by, C* = 0.0667m. To maintain dry conditions in a room of air space 100m³ containing 2.2 kg of water vapour initially, 10 kg of dry silica gel is kept in the room. The fraction of initial water remaining in the air space after a long time (during which the temperature is maintained constant) is 0.4 0.2 1 0.4 0.2 1 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The diffusivity (D) in a binary gas mixture is related to the pressure (P) as D ∝ P0.5 D ∝ 1/P0.5 D ∝ 1/P1.5 D ∝ 1/P D ∝ P0.5 D ∝ 1/P0.5 D ∝ 1/P1.5 D ∝ 1/P ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer In the constant rate period of the rate of drying curve for batch drying, Rate of drying decreases abruptly None of these Cracks develop on the surface of the solid Surface evaporation of unbound moisture occurs Rate of drying decreases abruptly None of these Cracks develop on the surface of the solid Surface evaporation of unbound moisture occurs ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer At __________ reflux, theoretical number of plates in a distillation coloumn is calculated using Fenske-Underwood equation. Operating Total Minimum Maximum permissible Operating Total Minimum Maximum permissible ANSWER DOWNLOAD EXAMIANS APP
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