Mass Transfer Diffusion co-efficient generally depends upon the temperature, pressure & the nature of the components of the system. Its dimension is not the same as that of the Kinematic viscosity Thermal diffusivity Volumetric diffusivity Mass transfer co-efficient Kinematic viscosity Thermal diffusivity Volumetric diffusivity Mass transfer co-efficient ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer In a moderately sized packed absorption tower, channeling (which is most severe with stacked packings) can be minimised by taking the ratio of tower diameter to packing diameter < 8 : 1 < 6:1 > 8:1 > 4 :1 < 8 : 1 < 6:1 > 8:1 > 4 :1 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Acetone is to be removed from air in an isothermal dilute absorber using pure water as solvent. The incoming air contains 5 mole% of acetone (yin = 0.05). The design equation to be used for obtaining the number of trays (N) of the absorber is, N+2 = 6 log (yin/yout).For 98% recovery of acetone, the number of trays required is/are 9 1 8 10 9 1 8 10 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer In liquid extraction, if the selectivity is unity, then Separation of the constituents is the most effective No separation will occur Amount of solvent required will be minimum Solvent flow rate should be very low Separation of the constituents is the most effective No separation will occur Amount of solvent required will be minimum Solvent flow rate should be very low ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The humid volume may be increased by increasing the Neither A nor B Temperature at constant humidity Humidity at constant temperature Both A & B Neither A nor B Temperature at constant humidity Humidity at constant temperature Both A & B ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The cooling effect in a cooling tower can not be increased by Lowering the barometric pressure None of these Reducing the humidity of entering air Increasing the air velocity over the wet surfaces Lowering the barometric pressure None of these Reducing the humidity of entering air Increasing the air velocity over the wet surfaces ANSWER DOWNLOAD EXAMIANS APP
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