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Which of the following compounds does no...

Which of the following compounds does not show Lassaine's test for nitrogen ?

A

Urea

B

Hydrazine

C

Phenylhydrazine

D

Azobenzene

Text Solution

Verified by Experts

The correct Answer is:
B
Hydrezine does not contain carbon and therefore of fusion with Na metal is cannot form NaCN. Thus, It does not respond to Lassaigne's test .
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DINESH PUBLICATION-PURIFICATION & CHARACTERISATION OF ORGANIC COMPOUND -Revision Q.F.Competitive exams
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  4. 0.1914 g of an organic acidi s dissolved in about 20 ml of water. 25 ...

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  5. An organic compound contains 49.3 % carbon,6.84 % hydrogen and its vap...

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  8. If 0.765 g of an acid gives 0.535 g of CO(2) and 0.138 g of H(2)O, the...

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  13. In a compound C, H, N atoms are present in 9:1:3.5 by weight. Molecula...

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  14. Empirical formula of a compound is CH(2)O and its molecular mass is 9...

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  15. An organic compound on analysis gave C=39.9 % ,H= 6.7 % and O =53.4 % ...

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  16. Which of the following statements is wrong ?

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  18. In Victor Meyers method, 0.2 g of an organic substance displaced 56 mL...

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  19. 116 mg of a compound on vaporisation in a victor Meyer's apparatus dis...

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  20. The compound formed in the positive test for neitrogen with Lassaigne ...

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