The equation, NA = (DAB . Pt /RTZ) (y1 – y2) is for _______________________?

Related Mcqs:

1. The equation, NA = (DAB . Pt /RTZ . PBM) (PA1 – PA2) is for_______________________?

   A. Fick’s second law of diffusion
   B. Steady state diffusion for stagnant case
   C. Liquid M.T.C. by Higbie penetration theory
   D. None of these

2. Mass transfer co-efficient is directly proportional to DAB according to the _____________ theory?

   A. Film
   B. Penetration
   C. Surface-renewal
   D. None of these

3. Mass transfer co-efficient is directly proportional to DAB according to the __________ theory?

   A. Film
   B. Penetration
   C. Surface-renewal
   D. None of these

4. Mass transfer co-efficient is directly proportional to DAB 0.5, according to ________________ theory ?

   A. Penetration
   B. Surface renewal
   C. Film
   D. None of these

5. Mass transfer co-efficient varies as DAB 0.5, according to the _______________ theory?

   A. Film
   B. Surface renewal
   C. Penetration
   D. None of these

6. 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

7. The cooling effect in a cooling tower can be speeded up by _______________________?

   A. Increasing the air velocity and area of exposed wet surface
   B. Reducing the barometric pressure
   C. Reducing the humidity of the air
   D. All A., B. and C.

8. In case of constant underflow extraction operation, the _______________________ at all solute concentration?

   A. Solids are drained to the same extent
   B. Ratio of the insoluble to solution is constant
   C. Both A. & B.
   D. Neither A. nor B.

9. The operating line for an absorber is curved, when plotted in terms of _______________________?

   A. Mole fractions
   B. Mole ratios
   C. Partial pressure
   D. Mass fractions

10. An ideal tower packing should not _______________________?

    A. Have low weight per unit volume
    B. Have large surface area per unit volume
    C. Have large free cross-section
    D. Hold up large amount of liquid in the packing