McCabe-Thiele method________________?

Related Mcqs:

1. In McCabe-Thiele method, at infinite reflux ratio___________________?

   A. Number of plates is maximum
   B. Overhead product is maximum
   C. Both the operating lines coincide with the diagram
   D. None of these

2. In McCabe-Thiele method, at infinite reflux ratio________________?

   A. The overhead product is minimum
   B. Both the operating lines coincide with diagonal
   C. Both A. and B.
   D. Neither A. nor B.

3. If f = moles of vapour present per mole of feed, then the slope of feed line is (McCabe- Thiele method) ________________________?

   A. (1 – f)/f
   B. – (f – 1)/f
   C. -1/f
   D. -f/(1 – f)

4. In McCabe-Thiele method of theoretical plate calculation for a distillation column, the operating lines of stripping and rectifying sections coincide with the diagonal at ________________ reflux ?

   A. Total
   B. Minimum
   C. Operating
   D. Maximum permissible

5. McCabe-Thiele method of binary distillation does not assume that the__________________?

   A. Sensible heat changes are negligible compared with latent heat changes
   B. Molar latent heats of all components are equal
   C. Heat of mixing is negligible
   D. None of these

6. The McCabe ΔL law states that the____________________?

   A. Molar heats of vaporisation of components are nearly equal
   B. Linear crystal growth rate depends on the degree of super-saturation
   C. Linear crystal growth rate does not depend on the crystal size
   D. Linear crystal growth rate depends on the crystal size

7. Which of the following is considered equivalent to one theoretical stage in Mc-Cabe Thiele’s method ?

   A. Partial condenser
   B. Total condenser
   C. Reboiler
   D. Both B. and C

8. Which of the following unit operations makes use of Thiele-Geddes equation ?

   A. Liquid-liquid extraction
   B. Solid-liquid extraction
   C. Multi-component absorption with chemical reaction
   D. Multi-component distillation

9. The mass transfer co-efficient for a solid sphere of radius ‘a’ dissolving in a large volume of quiescent liquid, in which „D’ is the diffusivity of solute, is _____________________?

   A. D/a
   B. D/2a
   C. Proportional to √D
   D. Dependent on the Reynolds number

10. Though, theoretically the adsorption & desorption isotherms is expected to coincide but sometimes at least a part of the isotherms does not coincide and this phenomenon is known as adsorption hysteresis. In such cases, the desorption equilibrium pressure is ______________ that obtained for adsorption?

    A. Lower than
    B. Higher than
    C. Same as
    D. Either same or higher than