Mass Transfer The surface renewal frequency in Danckwerts model of mass transfer is given by (KL: mass transfer co-efficient) KL²/DA KL².DA KL/DA² √(KL².DA) KL²/DA KL².DA KL/DA² √(KL².DA) ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer For the same system, if the same liquid used in an absorber is decreased, the tower height will Remain unaffected Decrease or increase ; depends on the type of liquid Decrease Increase Remain unaffected Decrease or increase ; depends on the type of liquid Decrease Increase ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Steady state equimolal counter diffusion is encountered in Separation of a binary mixture by distillation All of these Absorption of NH₃ from air by water All liquid-liquid diffusion systems Separation of a binary mixture by distillation All of these Absorption of NH₃ from air by water All liquid-liquid diffusion systems ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Plate towers are preferred to packed towers, when large temperature changes are involved, because of the reason that the Viscosity variation of the fluids may cause channeling/flooding Packing may be crushed due to thermal expansion/contraction of the components of the equipments Pressure drop in the equipment will be very high None of these Viscosity variation of the fluids may cause channeling/flooding Packing may be crushed due to thermal expansion/contraction of the components of the equipments Pressure drop in the equipment will be very high None of these ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Bound moisture is that liquid which exerts an equilibrium vapor pressure __________ that of the pure liquid at the given temperature. Either A or B; depends on the solid Equal to Less than More than Either A or B; depends on the solid Equal to Less than More than ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Packed column distillation is limited to the column __________ metres. Height < 6 Diameter < 0.6 Both A & B Neither A nor B Height < 6 Diameter < 0.6 Both A & B Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
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