Mass Transfer The drying time between fixed moisture content within diffusion controlled 'falling rate period' is proportional to (assuming that drying occurs from all surfaces of the solid) (where, T = thickness of the solid ) T √T T² T³ T √T T² T³ ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Which of the following provides maximum contact surface for a liquid-vapour system? Packed tower Bubble-cap plate column Seive-plate column Wetted wall column Packed tower Bubble-cap plate column Seive-plate column Wetted wall column ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Priming in a distillation column Reduces the overall pressure drop Is desirable from point efficiency consideration Is characterised by the presence of foam throughout the space between trays Results from very low gas velocity Reduces the overall pressure drop Is desirable from point efficiency consideration Is characterised by the presence of foam throughout the space between trays Results from very low gas velocity ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer During bottling of cold drinks (e.g. Pepsi), the main resistance to mass transfer for the absorption of carbon dioxide in water lies in the Gas film Liquid-gas interface Liquid film None of these Gas film Liquid-gas interface Liquid film None of these ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The expression, y(1 - x)/x(1 - y) is for Relative volatility Selectivity Murphree efficiency Absorption factor Relative volatility Selectivity Murphree efficiency Absorption factor 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 0.122 0.152 0.048 0.079 0.122 0.152 0.048 0.079 ANSWER DOWNLOAD EXAMIANS APP
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