Mass Transfer Back-trapping in a distillation column Reduces pressure drop Increases tray efficiency Decreases tray efficiency Is desirable, as it provides improved vapour-liquid contact Reduces pressure drop Increases tray efficiency Decreases tray efficiency Is desirable, as it provides improved vapour-liquid contact ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer In paper industry, paper is dried in a __________ dryer. Heated cylinder Conveyor Festoon Tunnel Heated cylinder Conveyor Festoon Tunnel ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Flooding results in Low tray efficiency High tray efficiency Good contact between the fluids High gas velocity Low tray efficiency High tray efficiency Good contact between the fluids High gas velocity ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Which of the following assumes constant molal vaporisation and overflow? McCabe-Thiele method Enthalpy concentration method Ponchan-Savarit method Plate absorption column McCabe-Thiele method Enthalpy concentration method Ponchan-Savarit method Plate absorption column ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Lewis number, which is important in problems involving simultaneous heat and mass transfer, is the ratio of Momentum diffusivity to thermal diffusivity Thermal diffusivity to mass diffusivity Mass diffusivity to momentum diffusivity None of these Momentum diffusivity to thermal diffusivity Thermal diffusivity to mass diffusivity Mass diffusivity to momentum diffusivity None of these ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer In case of gases, the binary diffusivity is proportional to (where, P = pressure) P 1/P 1/√P √P P 1/P 1/√P √P ANSWER DOWNLOAD EXAMIANS APP
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