Mass Transfer The cooling effect in a cooling tower can not be increased by Increasing the air velocity over the wet surfaces Reducing the humidity of entering air Lowering the barometric pressure None of these Increasing the air velocity over the wet surfaces Reducing the humidity of entering air Lowering the barometric pressure None of these ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer When the __________ the relative humidity of air decreases, despite an increase in the absolute humidity. Temperature rises Temperature falls Pressure rises Pressure falls Temperature rises Temperature falls Pressure rises Pressure falls ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer At what percentage (by volume) of alcohol composition, it forms an azeotrope with water? 91.5 99 90 95 91.5 99 90 95 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer In a single stage extraction process, 10 kg of pure solvent S (containing no solute A) is mixed with 30 kg of feed F containing A at a mass fraction xf = 0.2. The mixture splits into an extract phase E and a raf-finate phase R containing A at xB = 0.5 and xR = 0.05 respectively. The total mass of the extract phase is (in Kg) 6.89 10 8.25 8.89 6.89 10 8.25 8.89 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer In case of constant underflow extraction operation, the __________ at all solute concentration. Both A & B Neither A nor B Solids are drained to the same extent Ratio of the insoluble to solution is constant Both A & B Neither A nor B Solids are drained to the same extent Ratio of the insoluble to solution is constant ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Only small amount of evaporation of water produces large cooling effects because of its Large latent heat None of these Small latent heat Low viscosity Large latent heat None of these Small latent heat Low viscosity ANSWER DOWNLOAD EXAMIANS APP
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