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For which of the following compound Lass...

For which of the following compound Lassaigne's test will fail?

A

`NH_2CONH_2`

B

`NH_(2)CONH_(2).HCl`

C

`NH_(2)NH_(2).HCl`

D

`C_6H_5NH_(2)NH_(2).2HCl`

Text Solution

Verified by Experts

The correct Answer is:
C
For Lassaigne.s test of N, compound must contain C in addition to nitrogen, so that NaCN can be formed in the sodium extract.
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