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 ?
Correct answer: D. Selectivity
- A. Cost
- B. Availability
- C. Toxicity
- D. Selectivity
Explanation
The separating agent must preferentially alter the relative volatility of the components being separated, so selectivity is the key technical criterion. Cost, availability, and toxicity matter in final selection but do not determine separation effectiveness.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
Practise Mass Transfer Operations
669 free Mass Transfer Operations MCQs from Chemical Engineering, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Chemical Engineering questions like this
Chemical Engineering is on this paper prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for it.
More Mass Transfer Operations questions
What is the degree of freedom of an absorption process in which only one component is transferred between phases ?
Rayleigh equation applies to _________________ distillation ?
In a vapor-liquid contacting equipment, the overall gas phase mass transfer co-efficient (M.T.C), KG is related to individual co-efficients (KG and KL) as ___________________ ?
For water-ethanol system, the minimum reflux ratio_____________________?
Penetration theory relates the average mass transfer co-efficient (K) with diffusivity D. as____________________?
Which one of the following devices is not used for both the absorption as well as the liquidliquid extraction processes ?