Mass Transfer Fenske-Underwood equation used for calculating the minimum number of theoretical plates in distillation column is valid for All of these Constant relative volatility Constant molal overflow Total reflux All of these Constant relative volatility Constant molal overflow Total reflux ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Which of the following parameters remains almost constant during adiabatic saturation of unsaturated air? Wet bulb temperature Dew point None of these Dry bulb temperature Wet bulb temperature Dew point None of these Dry bulb temperature ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Tower diameter may be decreased by Use of increased tray spacing Increasing the vapour flow rate Increasing the liquid flow rate Using higher reflux ratio Use of increased tray spacing Increasing the vapour flow rate Increasing the liquid flow rate Using higher reflux ratio ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer With increase in absolute humidity, the dew point of an unsaturated mixture of air and water vapor (at constant pressure and temperature) Decreases Remains unchanged Increases Decreases linearly Decreases Remains unchanged Increases Decreases linearly ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Unsaturated air (with dry bulb and wet bulb temperatures being 45°C and 25°C respectively) is passed through a water spray chamber maintained at 23°C. The air will be cooled and Dehumidified Humidified at constant wet bulb temperature None of these Humidified with wet bulb temperature decreasing Dehumidified Humidified at constant wet bulb temperature None of these Humidified with wet bulb temperature decreasing ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Lewis number, which is important in problems involving simultaneous heat and mass transfer, is the ratio of Thermal diffusivity to mass diffusivity None of these Momentum diffusivity to thermal diffusivity Mass diffusivity to momentum diffusivity Thermal diffusivity to mass diffusivity None of these Momentum diffusivity to thermal diffusivity Mass diffusivity to momentum diffusivity ANSWER DOWNLOAD EXAMIANS APP
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