Mass Transfer What is the reflux ratio at total reflux? Data insufficient Infinity Unity Zero Data insufficient Infinity Unity Zero 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 1 8 10 9 1 8 10 9 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer At equilibrium the concentration of water in vapour phase (C*)in kg/m³ of air space and the amount of water (m) adsorbed per kg of dry silica gel are related by, C* = 0.0667m. To maintain dry conditions in a room of air space 100m³ containing 2.2 kg of water vapour initially, 10 kg of dry silica gel is kept in the room. The fraction of initial water remaining in the air space after a long time (during which the temperature is maintained constant) is 1 0.4 0.2 1 0.4 0.2 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer A good solvent used for absorption should not have very high Viscosity All of these Freezing point Vapor pressure Viscosity All of these Freezing point Vapor pressure ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer When adsorption hysteresis is observed, the desorption equilibrium pressure is __________ that obtained by adsorption. Always lower than Dependent on the system; can be either lower or higher than Always higher than Same as Always lower than Dependent on the system; can be either lower or higher than Always higher than Same as ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer A minimum boiling azeotrope is exemplified by None of these Water-isobutyl alcohol Acetone-carbon disulphide Toluene-benzene None of these Water-isobutyl alcohol Acetone-carbon disulphide Toluene-benzene ANSWER DOWNLOAD EXAMIANS APP
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