Mass Transfer Stefan's law describes the mass transfer by Diffusion Neither A nor B Bulk flow Both A & B Diffusion Neither A nor B Bulk flow Both A & B 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 Humidified with wet bulb temperature decreasing None of these Humidified at constant wet bulb temperature Dehumidified Humidified with wet bulb temperature decreasing None of these Humidified at constant wet bulb temperature Dehumidified ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The fixed cost of a distillation column at minimum reflux ratio is Minimum Optimum None of these Infinite Minimum Optimum None of these Infinite ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer In an operating distillation column, the Highest temperature is encountered at the top of the column Driving force for the liquid flow is its specific weight Driving force for the vapor flow is the pressure drop, as the pressure decreases gradually from the bottom to the top of the column Vapors and liquids are at their dew point and bubble point respectively Highest temperature is encountered at the top of the column Driving force for the liquid flow is its specific weight Driving force for the vapor flow is the pressure drop, as the pressure decreases gradually from the bottom to the top of the column Vapors and liquids are at their dew point and bubble point respectively ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Steam distillation is used to separate High boiling substances from nonvolatile impurities Mixtures of low relative volatility Heat sensitive materials Azeotropes High boiling substances from nonvolatile impurities Mixtures of low relative volatility Heat sensitive materials Azeotropes ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer A 25 cm x 25 cm x 1 cm flat sheet weighing 1.2 kg initially was dried from both sides under constant drying rate conditions. It took 1500 seconds for the weight of the sheet to reduce to 1.05 kg. Another 1m x 1m x 1cm flat sheet of the same material is to be dried from one side only.Under the same constant drying rate conditions, the time required for drying (in seconds) from its initial weight of 19.2 kg to 17.6 kg is 2500 2000 1500 1000 2500 2000 1500 1000 ANSWER DOWNLOAD EXAMIANS APP
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