Mass Transfer During the constant rate period of drying of a solid, Increasing the air temperature decreases the drying rate None of these Increased air humidity decreases the rate of drying Surface evaporation of unbound moisture occurs Increasing the air temperature decreases the drying rate None of these Increased air humidity decreases the rate of drying Surface evaporation of unbound moisture occurs ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Use of packed towers for distillation is generally limited to the Multicomponent distillation High pressure operation Vacuum distillation Small sizes Multicomponent distillation High pressure operation Vacuum distillation Small sizes ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Experiments were conducted to determine the flux of a species A in a stagnant medium across a gas-liquid interface. The overall mass transfer co-efficient based on the liquid side for dilute systems for the above was estimated to be 4 x 10⁻³ kg mole/m².s. The equilibrium data for the system is given as y = 2x. The flux across the interface (in kg mole/m² .s) for bulk concentrations of A in gas phase and liquid phase as y = 0.4 and x = 0.01 respectively is 8.5 x 10⁻³ 8.5 x 10⁻⁴ 5.6 x 10⁻⁴ 5.6 x 10⁻³ 8.5 x 10⁻³ 8.5 x 10⁻⁴ 5.6 x 10⁻⁴ 5.6 x 10⁻³ ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The rate of mass transfer is not dependent upon the Interfacial surface exposed between the phases Degree of dispersion of one fluid in the other None of these Both A & B Interfacial surface exposed between the phases Degree of dispersion of one fluid in the other None of these Both A & B ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Stacked packing compared to dumped packing Provides poorer contact between the fluids Both A & B Gives higher pressure drop Gives lower pressure drop Provides poorer contact between the fluids Both A & B Gives higher pressure drop Gives lower pressure drop ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Inside the distillation column, the None of these Liquids are not always at their bubble points Pressure increases gradually from bottom to the top of the column Driving force for the vapour flow is the pressure drop None of these Liquids are not always at their bubble points Pressure increases gradually from bottom to the top of the column Driving force for the vapour flow is the pressure drop ANSWER DOWNLOAD EXAMIANS APP
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