Mass Transfer Prandtl number for water at 20°C is about 0.7 150 7 70 0.7 150 7 70 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer For water-ethanol system, the minimum reflux ratio Is computed from the slope of the upper operating line that is tangent to the equilibrium curve Is computed from the intercept of the operating line Is the optimum reflux ratio Cannot be computed Is computed from the slope of the upper operating line that is tangent to the equilibrium curve Is computed from the intercept of the operating line Is the optimum reflux ratio Cannot be computed ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Which of the following is an undesirable property in a tower packing? Large surface per unit volume Large weight of liquid retained Low weight per unit volume Large free cross-section Large surface per unit volume Large weight of liquid retained Low weight per unit volume Large free cross-section ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer A liquid mixture contains 30% o-xylene, 60% p-xylene and 10%. m-xylene (all percentages in w/w). Which of the following statements would be true in respect of this mixture? The composition of the mixture, in percent by volume is: o-xylene 30, p-xylene 60. and m-xylene 10 The mixture exhibits an azeotrope at 101.3 kPa The composition of the mixture in mole percent is: o-xylene 30, p-xylene 60 and m-xyoene 10 The mixture contain optical isomers The composition of the mixture, in percent by volume is: o-xylene 30, p-xylene 60. and m-xylene 10 The mixture exhibits an azeotrope at 101.3 kPa The composition of the mixture in mole percent is: o-xylene 30, p-xylene 60 and m-xyoene 10 The mixture contain optical isomers ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The term "cooling range" in a cooling tower refers to the difference in the temperature of Cold water leaving the tower and the wet bulb temperature of the surrounding air None of the listed here Hot water entering the tower and the cooled water leaving the tower Hot water entering the tower and the wet bulb temperature of the surrounding air Cold water leaving the tower and the wet bulb temperature of the surrounding air None of the listed here Hot water entering the tower and the cooled water leaving the tower Hot water entering the tower and the wet bulb temperature of the surrounding air ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer As the reflux ratio in a distillation coloumn is increased from the minimum, the Slope of the operating line in stripping section decreases Number of plates decreases very slowly first and then more and more rapidly Liquid flow increases while the vapor flow decreases for a system Total cost first decreases and then increases Slope of the operating line in stripping section decreases Number of plates decreases very slowly first and then more and more rapidly Liquid flow increases while the vapor flow decreases for a system Total cost first decreases and then increases ANSWER DOWNLOAD EXAMIANS APP
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