Mass Transfer Back-trapping in a distillation column Reduces pressure drop Is desirable, as it provides improved vapour-liquid contact Increases tray efficiency Decreases tray efficiency Reduces pressure drop Is desirable, as it provides improved vapour-liquid contact Increases tray efficiency Decreases tray efficiency ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer If the specific heats of a gas and a vapor are 0.2KJ/Kg.°K and 1.5 KJ/Kg.°K respectively, and the humidity is 0.01; the humid heat in KJ/°Kg. is 0.107 0.31 0.017 0.215 0.107 0.31 0.017 0.215 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Heat load in a cooling tower Neither A nor B Means the amount of heat thrown away (KCal/hr.) by the cooling tower Both A & B Is equal to the number of kg, of water circulated times the cooling range Neither A nor B Means the amount of heat thrown away (KCal/hr.) by the cooling tower Both A & B Is equal to the number of kg, of water circulated times the cooling range ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Diffusivity in concentrated solutions differs from that in dilute solutions, because of the changes in Both A & B Neither A nor B Viscosity with concentration Degree of ideality of the solution Both A & B Neither A nor B Viscosity with concentration Degree of ideality of the solution ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer In case of constant underflow extraction operation, the __________ at all solute concentration. Neither A nor B Both A & B Solids are drained to the same extent Ratio of the insoluble to solution is constant Neither A nor B Both A & B Solids are drained to the same extent Ratio of the insoluble to solution is constant ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Which of the following processes is followed by unsaturated air (with dry bulb temperature 12°C and relative humidity 47%) passing through water spray washer (temperature of water being constant at 40°C? Evaporative cooling Both heating and humidification Humidification only Heating only Evaporative cooling Both heating and humidification Humidification only Heating only ANSWER DOWNLOAD EXAMIANS APP
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