Related Mcqs:

1. Flash distillation is suitable for separating the constituents of a binary system, which _____________________?

   A. Form minimum boiling azeotrope
   B. Have very wide boiling points
   C. Have very close boiling points
   D. Form constant boiling azeotrope

2. Large scale usage of flash distillation is practised in __________________?

   A. Soap manufacturing
   B. Ammonia synthesis plant
   C. Polymerisation industry
   D. Petroleum refining

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. When the mixture to be distilled has a very high boiling point and the product material is heat sensitive, the separation technique to be used is _______________ distillation?

   A. Continuous
   B. Steam
   C. Azeotropic
   D. None of these

5. Separation of two volatile liquids by distillation makes use of their________________________?

   A. Selectivity
   B. Relative volatility
   C. Solubility
   D. Density difference

6. Out of two equilibrium curves, first one lies above the diagonal and the second lies below the diagonal in the x-y plot. It means that separation by distillation is_________________?

   A. Not possible in the second case unless vacuum is applied
   B. Not possible in the second case unless high pressure is applied
   C. More readily done in the second case compared to first one
   D. None of these

7. Steam distillation is used for separation of high boiling ____________________?

   A. Substances from non-volatile impurities
   B. Volatile impurity from still higher boiling substances
   C. Both A. and B.
   D. Neither A. nor B.

8. For the same feed, feed quality and separation (in a distillation column), with the increase of total pressure, the number of ideal plates will_____________________?

   A. Increase
   B. Decrease
   C. Remain same
   D. Data insufficient, can’t be predicted

9. _____________ is used as an ‘entrainer’ for the separation of acetic acid-water mixture by distillation?

   A. Furfural
   B. Benzol
   C. Butyl acetate
   D. Hexane

10. The-relative volatility for separation of a non-ideal binary mixture by distillation should be ___________________?

    A. 0
    B. 1
    C. > 1
    D. < 1