Mass Transfer In continuous distillation, the internal reflux ratio (Ri) and the external reflux ratio (Re) are related as Ri = (1 - Re)/Re Ri = Re/(1 + Re) Ri = Re Ri = Re/(1 - Re) Ri = (1 - Re)/Re Ri = Re/(1 + Re) Ri = Re Ri = Re/(1 - Re) ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer In case of liquids, the binary diffusivity is proportional to (where, T = temperature) T 1/T √T T² T 1/T √T T² ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Which of these columns incurs the lowest pressure drop? Packed column (with stacked packing) Packed column (with dumped packing) Pulse column Bubble plate column Packed column (with stacked packing) Packed column (with dumped packing) Pulse column Bubble plate column ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Weeping in a distillation column Increases tray efficiency Results due to very low gas velocity Results due to very high gas velocity Provides large interfacial surface for mass transfer Increases tray efficiency Results due to very low gas velocity Results due to very high gas velocity Provides large interfacial surface for mass transfer ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Which one of the following devices is not used for both the absorption as well as the liquid-liquid extraction processes? Wetted wall columns Plate towers Spray towers Packed towers Wetted wall columns Plate towers Spray towers Packed towers ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer In liquid extraction, if the selectivity is unity, then Amount of solvent required will be minimum Solvent flow rate should be very low Separation of the constituents is the most effective No separation will occur Amount of solvent required will be minimum Solvent flow rate should be very low Separation of the constituents is the most effective No separation will occur ANSWER DOWNLOAD EXAMIANS APP
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