Mass Transfer The interfacial area per unit volume of dispersion, in a gas-liquid contactor, for fractional hold up of gas = 0.1 and gas bubble diameter = 0.5 mm is given by (in m²/m³) 1000 500 100 50 1000 500 100 50 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer McCabe-Thiele method Uses molal units for material and energy balance Uses weight fractions to express liquid and vapour composition Can use any type of units Is more accurate than Ponchan-Savarit method Uses molal units for material and energy balance Uses weight fractions to express liquid and vapour composition Can use any type of units Is more accurate than Ponchan-Savarit method ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer With increase in the mass velocity of the gas, the rate of drying during the constant rate period __________ , if the conduction and radiation through the solid are negligible. Increases linearly Remains same Increases Decreases Increases linearly Remains same Increases Decreases ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer With increase in temperature, the leaching rate increases due to Increased diffusivity Neither A nor B Decreased liquid viscosity Both A & B Increased diffusivity Neither A nor B Decreased liquid viscosity Both A & B ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The temperature of water cooled in cooling tower is always __________ temperature of entering air. Equal to the dry bulb More than the wet bulb Less than the wet bulb Equal to the wet bulb Equal to the dry bulb More than the wet bulb Less than the wet bulb Equal to the wet bulb ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer In steam distillation, the Temperature is 100°C Temperature is more than 100° C Product must be immiscible with water Temperature is higher than the boiling point of either component Temperature is 100°C Temperature is more than 100° C Product must be immiscible with water Temperature is higher than the boiling point of either component ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS