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

Related Mcqs:

1. Separation of two volatile liquids by distillation makes use of their___________________?

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

2. Solvent extraction is the terminology applied to the liquid-liquid extraction, which is preferred for the separation of the components of liquids, when____________________?

   A. Extracting solvent is cheaply & abundantly available
   B. One of the liquid components is heat sensitive
   C. Viscosity of liquid components is very high
   D. One of the liquid components has very high affinity towards the solvent

3. 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

4. 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

5. Flash distillation is suitable for the separation of components_________________?

   A. Having very close boiling points
   B. Which form maximum boiling azeotrope
   C. Having very wide boiling points
   D. Which form minimum boiling azeotrope

6. 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.

7. 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

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

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

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

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

10. The minimum number of theoretical plates is required for achieving a given separation in distillation column with_________________?

    A. No reflux
    B. Total reflux
    C. Zero reflux ratio
    D. Minimum reflux ratio