Mass Transfer If Rm is the minimum reflux ratio, the optimum reflux ratio may be around __________ Rm. 1.2 to 1.5 5 3 to 4 2.5 to 3 1.2 to 1.5 5 3 to 4 2.5 to 3 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Dew point of an air-water vapor mixture All of the listed here At constant humidity & total pressure is fixed Decreases with decrease in pressure Corresponding to any point on the humidity chart is obtained by projecting a line through this point parallel to the temperature axis and to the saturation curve All of the listed here At constant humidity & total pressure is fixed Decreases with decrease in pressure Corresponding to any point on the humidity chart is obtained by projecting a line through this point parallel to the temperature axis and to the saturation curve ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Steady state equimolal counter diffusion is encountered in All liquid-liquid diffusion systems All of these Separation of a binary mixture by distillation Absorption of NH₃ from air by water All liquid-liquid diffusion systems All of these Separation of a binary mixture by distillation Absorption of NH₃ from air by water ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer With increase in temperature, the leaching rate increases due to Neither A nor B Both A & B Increased diffusivity Decreased liquid viscosity Neither A nor B Both A & B Increased diffusivity Decreased liquid viscosity ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer In a distillation operation, what is the effect of the temperature of the reflux stream (given below) on the condenser and reboiler loads? Reflux conditions:(i) Reflux stream is completely liquid and is at its bubble point.(ii) Reflux stream is below its bubble point. Condenser load is the same in both the cases but reboiler load is higher in case (ii) Reboiler load is the same in both the cases but condenser load is higher in case (ii) Both condensor and reboiler loads are higher in case (ii) as compared to case (i) Condenser and reboiler loads are the same in both the cases Condenser load is the same in both the cases but reboiler load is higher in case (ii) Reboiler load is the same in both the cases but condenser load is higher in case (ii) Both condensor and reboiler loads are higher in case (ii) as compared to case (i) Condenser and reboiler loads are the same in both the cases ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The Reynolds number of the liquid was increased 100 fold for a laminar falling film used for gas-liquid contacting. Assuming penetrating theory is applicable, the fold increase in the mass transfer co-efficient (Kc) for the same sytem is 100 1 10 5 100 1 10 5 ANSWER DOWNLOAD EXAMIANS APP
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