A binary mixture of benzene and cyclohexane is separated by___________________?
Correct answer: B. Extractive distillation
- A. Flash vaporisation
- B. Extractive distillation
- C. Solvent extraction
- D. Ordinary distillation
Explanation
Benzene and cyclohexane have nearly identical boiling points, making ordinary distillation difficult because their relative volatility is close to one. Extractive distillation adds a selective solvent to increase their relative volatility.
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