Alcohol is dehydrated using _______________________ distillation?

Related Mcqs:

1. Alcohol is dehydrated using ______________ distillation?

   A. Extractive
   B. Azeotropic
   C. Steam
   D. Molecular

2. 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

3. Flash distillation is _______________________?

   A. Same as differential distillation
   B. Used for multi-component systems like crude refining
   C. Same as simple distillation
   D. Most useful for handling binary systems

4. Polar organic compounds are normally used as separating agents for the azeotropic and extractive distillation. Which of the following is the most important factor to be considered for the choice of the separating agent for extractive distillation ?

   A. Cost
   B. Availability
   C. Toxicity
   D. Selectivity

5. At what percentage (by volume) of alcohol composition, it forms an azeotrope with water ?

   A. 90
   B. 91.5
   C. 95
   D. 99

6. Azeotropism for ethyl alcohol-water system disappears by_____________________?

   A. Increasing temperature
   B. Decreasing pressure
   C. Increasing pressure
   D. No means

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

   A. Steady state equimolar counter diffusion
   B. Fick’s first law of diffusion
   C. Steady state diffusion for stagnant case
   D. Liquid M.T.C. by penetration theory

9. For an absorber, both equilibrium and operating line will be straight for _______________________?

   A. Concentrated solution and non-isothermal operation
   B. Dilute solution and non-isothermal operation
   C. Dilute solution and isothermal operation
   D. Concentrated solution and isothermal operation

10. At a fixed total pressure, humidity depends only on the _______________________?

    A. Partial pressure of vapour in the mixture
    B. Heat capacity of the vapour
    C. Density of the vapour
    D. None of these