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

Related Mcqs:

1. Acetic acid will be most economically separated from a dilute solution of acetic acid in water by____________________?

   A. Solvent extraction
   B. Continuous distillation
   C. Evaporation
   D. Absorption

2. Entrainer used in Azeotropic distillation should____________________?

   A. Form a low boiling azeotrope with one of the constituents of the mixture
   B. Form a new azeotrope of low relative volatility with one of the constituents of the mixture
   C. Have high latent heat of vaporisation
   D. Have high viscosity to provide high tray efficiency

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

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

5. The diffusion co-efficient in m2/s. of acetic acid in benzene (liquid in liquid) is___________________?

   A. 2.09 × 10-4
   B. 2.09 × 10-5
   C. 2.09 × 10-9
   D. 2.09 × 10-12

6. An air-water vapour mixture has a dry bulb temperature of 60°C and a dew point temperature of 40°C. The total pressure is 101.3 kPa and the vapour pressure of water at 40°C and 60°C are 7.30 kPa and 19.91 kPa respectively. The humidity of air sample expressed as kg of water vapour/kg of dry air is__________________?

   A. 0.048
   B. 0.079
   C. 0.122
   D. 0.152

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

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

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

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

9. 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.

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