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Glycerol boils at 290^(@) C slight decom...

Glycerol boils at `290^(@)` C slight decomposition Impure glycerine can be purified by

A

Steam distillation

B

Simple distillation

C

Vacuum distillation

D

Extraction with a solvent

Text Solution

Verified by Experts

The correct Answer is:
C
The liquids which decompose at its boiling point can be purified by vacuum distillation. Glycerol which decomposes at its boiling point (563K) can be distilled without decomposition at 453K under 12mm Hg pressure.
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ERRORLESS-ALCOHOLS, PHENOLS AND ETHERS-NCERT BASED QUESTIONS (Dihydric, Trihydric and Unsaturated Alcohols)
  1. Ethylene glycol reacts with excess of PCl(5) to give :

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  2. Which of the following compounds contain at least one secondary alcoho...

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  3. Which of the following is industrially prepared by passing ethylene in...

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  4. The reaction of ethylene glycol with PI(3) gives :

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  5. CH(2)OH.CH(2)OH on heating with periodic acid gives

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  6. Identify the product of the following reaction:

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  7. Glycerine has

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  8. Benzene on treatment with a mixture of conc.HNO3 and conc. H2SO4 at 10...

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  9. Fats on alkaline hydrolysis, give

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  10. What is formed when glycerol reacts with HIO(4) ?

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  11. When glycerol is heated with KHSO4 it gives

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  12. With oxalic acid, glycerol at 260^(@) C gives

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  13. Glycerol on treatment with oxalic acid at 110^(@)C forms

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  14. Dehydration of glycerol produces

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  15. Glycerol on reaction with NaHCO(3) gives

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  16. Glycerol boils at 290^(@) C slight decomposition Impure glycerine can ...

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  17. On passing vapours of an organic liquid over finely divided Cu at 573K...

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  18. CH(3)-CH=CH-CH(OH)-CH(3)underset("reagent")overset("Jone's")to X, Prod...

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  19. C(6)H(5)-CH=CHCHO overset((X))rarr C(6)H(5)CH=CH(2)OH In the above s...

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  20. The compound which reacts with excess bromine to produce 2, 4, 6-tribr...

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