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The best method for the separation of na...

The best method for the separation of naphthalene and benzoic acid from their mixture is

A

chromatography

B

crystallisation

C

distillation

D

sublimation

Text Solution

Verified by Experts

The correct Answer is:
D
The best method for the separation of naphthalene and benzoic acid from their mixture is sublimation because it is applicable for those organic compounds which pass directly from solid to vapour state on heating and vice versa on cooling . In these compounds naphthalene is volatile and benzoic acid is non-volatile due to the formation of dimer via hydrogen bonding (intermolecular)
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NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)-CHEMICAL ANALYSIS-Exercise
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  2. In Duma's method for estimation of nitrogen. 0.25 g of an organic comp...

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  3. Which of the statements is not true ?

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  4. The LaSSaigen's extract is boiled with conc. HNO(3) while testing for...

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  5. In Dumas' method of estimation of nitrogen 0.35 g of an organic compou...

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  6. An organic compound contains carbon, hydrogen and oxygen. Its elementa...

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  7. The best method for the separation of naphthalene and benzoic acid fro...

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  8. Camphor is often used in molecular mass determination because

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  9. An organic compound contains C = 40%, H = 13.33%, and N = 46.67%. Its ...

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  10. In steam distillation of toluene , the pressure of toluene in vapour i...

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  11. Which of the following techniques is most suitable for purification of...

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  12. A compound contains C=40%,O=53.5%, and H=6.5% the empirical formula fo...

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  13. Lassaigne's test for the detection of N fails in :

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  14. A is a lighter phenol and B is an aromatic carboxylic acid . Separatio...

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  15. In sodium extract test of organic compounds, the nitrogen of an organi...

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  16. Kjeldahl's method is used in the estimation of

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  17. Lassaigne's test is used for th detection of:

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  18. Prussian blue is formed when

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