Mass Transfer The reason for preferring packed towers over plate towers in distillation practice is that the packed tower operation gives Low pressure drop and high hold up High pressure drop and high hold up Low pressure drop and low hold up High pressure drop and low hold up Low pressure drop and high hold up High pressure drop and high hold up Low pressure drop and low hold up High pressure drop and low hold up ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Steady state equimolal counter diffusion is encountered in All of these Absorption of NH₃ from air by water All liquid-liquid diffusion systems Separation of a binary mixture by distillation All of these Absorption of NH₃ from air by water All liquid-liquid diffusion systems Separation of a binary mixture by distillation ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer If the solubilities of different components (in a liquid-liquid extraction system) increase with rise in temperature, then the temperature above which they dissolve completely is known as the critical solution temperature (CST or consolute temperature). If solubilities increase with decrease in temperature, then CST is the temperature below which they dissolve completely. If a binary system has no critical solution temperature, it implies that The system comprises of partially mis-cible liquids The system comprises of an azeotrope The system comprises of miscible liquids On heating, a vapor phase will appear ; while on cooling, a solid phase will appear The system comprises of partially mis-cible liquids The system comprises of an azeotrope The system comprises of miscible liquids On heating, a vapor phase will appear ; while on cooling, a solid phase will appear 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. Remains same Decreases Increases linearly Increases Remains same Decreases Increases linearly Increases ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer CO₂ can be absorbed by Cold Ca(OH)₂ Alumina Heated charcoal Hot cupric oxide Cold Ca(OH)₂ Alumina Heated charcoal Hot cupric oxide ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Channelling is most severe At very high liquid flow rate In dumped packing of regular units In towers packed randomly with crushed solids In towers packed with stacked packing At very high liquid flow rate In dumped packing of regular units In towers packed randomly with crushed solids In towers packed with stacked packing ANSWER DOWNLOAD EXAMIANS APP
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