Question:
In which distillation, a solvent is added to alter the relative volatility of the mixture to be separated?
In which distillation, a solvent is added to alter the relative volatility of the mixture to be separated?
Show Hint
Extractive distillation uses a solvent to change relative volatility and make difficult separations easier.
Updated On: May 27, 2026
- Flash
- Azeotropic
- Steam
- Extractive
Show Solution
Verified By Collegedunia
The Correct Option is D
Solution and Explanation
Extractive distillation is used when components have close boiling points or low relative volatility.
In this method, a high boiling solvent is added to the mixture.
The solvent changes the relative volatility of the components.
This makes separation easier.
The solvent does not usually form an azeotrope with the components.
It selectively interacts with one component more than the other.
As a result, volatility difference increases.
Flash distillation is a single-stage separation.
Steam distillation uses steam to reduce partial pressure and distill high boiling materials.
Azeotropic distillation uses an entrainer to form an azeotrope.
Therefore, the distillation in which solvent is added to alter relative volatility is:
\[
\text{Extractive distillation}
\]
Was this answer helpful?
0
0
Top AP ECET Chemical Engg Chemical Engineering Questions
- Which mechanical property of a metal represents its ability to resist permanent deformation?
- The area under the stress-strain curve up to the fracture point represents:
- The Brinell hardness test measures hardness by:
- In a thermal equilibrium (phase) diagram of iron-carbon system, eutectoid point occurs at:
- Pig iron is produced in a:
View More Questions
Top AP ECET Chemical Engg Mass Transfer Questions
- In gas analysis, when composition is expressed on a dry basis, it means:
- Recycling and bypassing of streams in a process plant are mainly used to:
- In the ion-exchange process for water treatment, hard water is softened by:
- Fick's first law of diffusion states that the rate of mass transfer is proportional to the:
- Molecular diffusion in gases is fastest when the:
View More Questions
Top AP ECET Chemical Engg Questions
- Which mechanical property of a metal represents its ability to resist permanent deformation?
- The area under the stress-strain curve up to the fracture point represents:
- The Brinell hardness test measures hardness by:
- In a thermal equilibrium (phase) diagram of iron-carbon system, eutectoid point occurs at:
- Pig iron is produced in a:
View More Questions