Mass Transfer When adsorption hysteresis is observed, the desorption equilibrium pressure is __________ that obtained by adsorption. Same as Always higher than Dependent on the system; can be either lower or higher than Always lower than Same as Always higher than Dependent on the system; can be either lower or higher than Always lower than ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer In which of the following unit operations, the selectivity is an important parameter? Solvent extraction Distillation None of these Absorption Solvent extraction Distillation None of these Absorption ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer For a fixed number of ideal stages in a distillation column, as the reflux ratio is increased, the difference in composition between the top and bottom product streams Increases Passes through a maximum Remains unaffected Decreases Increases Passes through a maximum Remains unaffected Decreases ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer If Rm is the minimum reflux ratio, the optimum reflux ratio may be around __________ Rm. 3 to 4 5 1.2 to 1.5 2.5 to 3 3 to 4 5 1.2 to 1.5 2.5 to 3 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Which of the following is not a batch drier? Agitated pan drier Vacuum shelf drier Fluidised bed drier Truck drier Agitated pan drier Vacuum shelf drier Fluidised bed drier Truck drier ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Acetone is to be removed from air in an isothermal dilute absorber using pure water as solvent. The incoming air contains 5 mole% of acetone (yin = 0.05). The design equation to be used for obtaining the number of trays (N) of the absorber is, N+2 = 6 log (yin/yout).For 98% recovery of acetone, the number of trays required is/are 8 9 10 1 8 9 10 1 ANSWER DOWNLOAD EXAMIANS APP
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