Mass Transfer Chemisorption (chemical adsorption) is A reversible phenomenon Same as "Van der Waals" adsorption An irreversible phenomenon Characterised by adsorption of heat A reversible phenomenon Same as "Van der Waals" adsorption An irreversible phenomenon Characterised by adsorption of heat ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Diffusivity in concentrated solutions differs from that in dilute solutions, because of the changes in Both A & B Degree of ideality of the solution Viscosity with concentration Neither A nor B Both A & B Degree of ideality of the solution Viscosity with concentration Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer At minimum reflux ratio for a given separation Number of plates is infinity Number of plates is zero Separation is most efficient Minimum number of the theoretical plates is required Number of plates is infinity Number of plates is zero Separation is most efficient Minimum number of the theoretical plates is required 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 Same as Always higher than Always lower than Dependent on the system; can be either lower or higher than Same as Always higher than ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer In case of gases, the binary diffusivity is proportional to (where, P = pressure) √P 1/P P 1/√P √P 1/P P 1/√P 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 contain optical isomers The mixture exhibits an azeotrope at 101.3 kPa The composition of the mixture, in percent by volume is: o-xylene 30, p-xylene 60. and m-xylene 10 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 mixture exhibits an azeotrope at 101.3 kPa The composition of the mixture, in percent by volume is: o-xylene 30, p-xylene 60. and m-xylene 10 The composition of the mixture in mole percent is: o-xylene 30, p-xylene 60 and m-xyoene 10 ANSWER DOWNLOAD EXAMIANS APP
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