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Naphthalene is a volatile solid. It is p...

Naphthalene is a volatile solid. It is purified by

A

Crystallisation

B

Distillation

C

Steam distillation

D

Sublimation

Text Solution

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The correct Answer is:
D
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AAKASH SERIES-PURIFICATION OF ORGANIC COMPOUNDS AND IUPAC NOMENCLATURE-LECTURE SHEET (EXERCISE - I (STRAIGHT OBJECTIVE TYPE QUESTIONS))
  1. The purity of an organic solid is checked by its

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  2. Naphthalene is a volatile solid. It is purified by

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  3. A mixture of o-nitrophenol and p-nitrophenol can best be separated by

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  4. A mixture of two miscible liquids can be separated by simple distillat...

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  5. In Lassaigne's test, the organic compound is fused with sodium metal a...

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  6. The prussian blue colour obtained during the test for nitrogen by Lass...

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  7. When N and S both are present in an organic compound, the sodiun fusio...

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  8. The sodium fusion extract of an organic compound on acidification with...

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  9. During the test for halogens, sodium extract is first boiled with nitr...

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  10. Copper wire test for halogens is known as

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  11. In which of the following compounds, nitrogen cannot be tested by Lass...

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  12. A compound which does not give a positive test in Lassaigne.s test for...

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  13. In the Duma's method for the estimation of nitrogen in an organic comp...

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  14. In the estimation of sulphur in an organic compound, fuming nitric aci...

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  15. In the estimation of nitrogen by Duma's method 1.18g of an organic com...

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  16. In organic compounds, phosphorus is estimated as:

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  17. Kjeldahl's method cannot be used for the estimation of nitrogen in

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

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  19. The blood red colour in the combination test of nitrogen and sulphur i...

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  20. The violet colour obtained during the test of sulphur Lassaigne's test...

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