Mass Transfer If mass diffusivity in a mixture is equal to the thermal diffusivity, then the Lewis number is > 1 1 < 1 > 1 1 < 1 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Molecular diffusivity of a liquid May increase or decrease with temperature Decreases with temperature Is independent of temperature Increases with temperature May increase or decrease with temperature Decreases with temperature Is independent of temperature Increases with temperature 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 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 composition of the mixture, in percent by volume is: o-xylene 30, p-xylene 60. and m-xylene 10 The mixture contain optical isomers 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 composition of the mixture, in percent by volume is: o-xylene 30, p-xylene 60. and m-xylene 10 The mixture contain optical isomers ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The temperature of water cooled in cooling tower is always __________ temperature of entering air. Equal to the dry bulb Equal to the wet bulb More than the wet bulb Less than the wet bulb Equal to the dry bulb Equal to the wet bulb More than the wet bulb Less than the wet bulb ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer In case of steam distillation, the steam leaving the liquid is not completely saturated with distillate vapour, because Total pressure is less Temperature is less Mixing of steam with the material being vaporised is not so intimate as to result in equilibrium condition Saturated steam is used for steam distillation Total pressure is less Temperature is less Mixing of steam with the material being vaporised is not so intimate as to result in equilibrium condition Saturated steam is used for steam distillation ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Minimum possible diameter of a packed coloumn is decided mainly by the Liquid density Gas viscosity Liquid hold up Flooding Liquid density Gas viscosity Liquid hold up Flooding ANSWER DOWNLOAD EXAMIANS APP
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