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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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Knowledge Check

  • Which of the following compounds does not show Lassaigne's test for nitrogen

    A
    Phenylhydrazine
    B
    Azobenzene
    C
    Urea
    D
    Hydrazine

  • Which of the following compounds will not give Lassaigne's test for nitrogen ?

    A
    `NH_(2)NH_(2)`
    B
    `C_(6)H_(5)NHNH_(2)`
    C
    phN=Nph
    D
    `NH_(2)CONH_(2)`

  • Which of the following compounds will not give Lassaigne's test for nitrogen ?

    A
    `NH_(2)NH_(2)`
    B
    `C_(6)H_(5)NHNH_(2)`
    C
    `PhN = NPh`
    D
    `NH_(2)CONH_(2)`

    • Similar Questions

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    During the detection of elements by Lassaigne's test, the covalent compounds are converted into ionic compounds by fusion with metallic sodium. The nitrogen, sulphur and halogens present in the organic compound are converted into cyanides, sulphides and halides respectively which are then detected by their usual tests. Which of the following compounds will answer Lassaigne's test for nitrogen ?

    Which of the following compounds gives positive Lassaigne's test for nitrogen? (i) Urea (ii) Hydrazine (iii) Phenylhydrazine (iv) Azobenzene

    Which of the following compound does not show metamerism?

    For which of the following compounds will Lassaigne's test for nitrogen fail ?

    Which of the following compounds does not show tautomerism ?

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