Mass Transfer Back-trapping in a distillation column Is desirable, as it provides improved vapour-liquid contact Reduces pressure drop Increases tray efficiency Decreases tray efficiency Is desirable, as it provides improved vapour-liquid contact Reduces pressure drop Increases tray efficiency Decreases tray efficiency ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer During the constant rate period of drying of a solid, None of these Increased air humidity decreases the rate of drying Surface evaporation of unbound moisture occurs Increasing the air temperature decreases the drying rate None of these Increased air humidity decreases the rate of drying Surface evaporation of unbound moisture occurs Increasing the air temperature decreases the drying rate ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer __________ equation applies to diffusivities in liquids. Hirschfelder Wilke and Chang None of these Gilliland Hirschfelder Wilke and Chang None of these Gilliland ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Ordinary diffusion process is also called __________ diffusion. Pressure Thermal Forced Concentration Pressure Thermal Forced Concentration ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The relative humidity of air decreases in-spite of an increase in the absolute humidity, when the Pressure rises Temperature rises Pressure falls Temperature falls Pressure rises Temperature rises Pressure falls Temperature falls ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer An air-water vapour mixture has a dry bulb temperature of 60°C and a dew point temperature of 40°C. The total pressure is 101.3 kPa and the vapour pressure of water at 40°C and 60°C are 7.30 kPa and 19.91 kPa respectively.The humidity of air sample expressed as kg of water vapour/kg of dry air is 0.079 0.122 0.152 0.048 0.079 0.122 0.152 0.048 ANSWER DOWNLOAD EXAMIANS APP
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