Mass Transfer If mass diffusivity in a mixture is equal to the thermal diffusivity, then the Lewis number is > 1 1 < 1 > 1 1 < 1 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Out of the following gas-liquid contacting devices, for a given set of operating conditions, gas pressure drop is the least in __________ tower. Packed Perforated tray Bubble cap Wetted wall Packed Perforated tray Bubble cap Wetted wall ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Penetration theory relates the average mass transfer co-efficient (K) with diffusivity (D) as K ∝ D1.5 K ∝ D2 K ∝ D K ∝ √D K ∝ D1.5 K ∝ D2 K ∝ D K ∝ √D ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The fixed cost of a distillation column at minimum reflux ratio is Minimum Optimum Infinite None of these Minimum Optimum Infinite None of these ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The cooling effect in a cooling tower can be speeded up by Reducing the barometric pressure Reducing the humidity of the air Increasing the air velocity and area of exposed wet surface All of the listed here Reducing the barometric pressure Reducing the humidity of the air Increasing the air velocity and area of exposed wet surface All of the listed here ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Weeping in a distillation column Provides large interfacial surface for mass transfer Results due to very low gas velocity Increases tray efficiency Results due to very high gas velocity Provides large interfacial surface for mass transfer Results due to very low gas velocity Increases tray efficiency Results due to very high gas velocity ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS