A. Viscosity with concentration
B. Degree of ideality of the solution
C. Both A. and B.
D. Neither A. nor B.
Related Mcqs:
- Diffusion in concentrated solutions differs from that in dilute solutions, because of the change in the _______________ with the concentration of the solution?
A. Degree of ideality
B. Viscosity
C. Both A & B
D. Neither A nor B - The mass diffusivity, the thermal diffusivity and the eddy momentum diffusivity are same for, NPr = NSc = _________________?
A. 1
B. 0.5
C. 10
D. 0 - The diffusivity, DAB (for component A diffusing in B) is equal to the diffusivity DBA (for component B diffusing in A) for a binary mixture of________________?
A. Newtonian liquids
B. Non-Newtonian liquids
C. Ideal gases
D. Real gases - If mass diffusivity in a mixture is equal to the thermal diffusivity, then the Lewis number is____________________
A. 0
B. 1
C. 1 - Experiments were conducted to determine the flux of a species A in a stagnant medium across a gas-liquid interface. The overall mass transfer co-efficient based on the liquid side for dilute systems for the above was estimated to be 4 × 10-3 kg mole/m2.s. The equilibrium data for the system is given as y = 2x. The flux across the interface (in kg mole/m2 .s) for bulk concentrations of A in gas phase and liquid phase as y = 0.4 and x = 0.01 respectively is _________________________?
A. 5.6 × 10-4
B. 8.5 × 10-4
C. 5.6 × 10-3
D. 8.5 × 10-3 - Acetic acid will be most economically separated from a dilute solution of acetic acid in water by____________________?
A. Solvent extraction
B. Continuous distillation
C. Evaporation
D. Absorption - 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 ?
A. 4
B. 8
C. 9
D. 10 - The overall mass transfer co-efficient for the absorption of SO2 in air with dilute NaOH solution can be increased substantially by___________________?
A. Increasing the gas film co-efficient
B. Increasing the liquid film co-efficient
C. Increasing the total pressure
D. Decreasing the total pressure - Which of the following solutions will follow Raoult’s law most closely ?
A. A solution of benzene, toluene and o-xylene
B. 35% solution of camphor in water
C. 35% solution of NH3 in water
D. A solution of polar organic compounds (not of homologue of a series) - Water-ethyl alcohol solution can be concentrated (in respect of alcohol concentration) by ________________ distillation?
A. Atmospheric
B. Vacuum
C. High pressure
D. None of these
