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A compound which does not give a positiv...

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

A

Urea

B

Hydrazine

C

Azobenzene

D

Phenyl hydrazine

Text Solution

Verified by Experts

The correct Answer is:
B
Hydrazine.
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AAKASH SERIES-PURIFICATION OF ORGANIC COMPOUNDS AND IUPAC NOMENCLATURE-LECTURE SHEET (EXERCISE - I) LEVEL - II (ADVANCED)
  1. A compound which does not give a positive test in Lassaigne.s test for...

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

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

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

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  5. In organic compounds, phosphorus is estimated as:

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

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  7. An organic compound containing carbon, hydrogen and nitrogen have the ...

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

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  9. Nitrogen, sulphur and halogens are tested from the sodium fusion extra...

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  10. Which of the following compounds gives blood red colouration when its ...

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  11. An organic compound which produces a bluish green coloured flame on he...

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  12. Fractional crystallization is carried out to separate

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  13. When N and S both are present in an organic compound, the sodium fusio...

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  14. Two substances when separated on the basis of partition coefficient be...

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  15. Absolute alcohol can be prepared from rectified spirit by

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  16. The ammonia evolved by the treatment of 0.30 g of an organic compound ...

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  17. 28 mg of an organic compound containing nitrogen was digested accordin...

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  18. Benzene and aniline are liquids. Their mixture can be sepearated by

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  19. Which of the following methods are generally used for purification of ...

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  20. Which of the following are formed in the process of estimation of phos...

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