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Lassaigne's test for the detection of ni...

Lassaigne's test for the detection of nitrogen fails in

A

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

B

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

C

`NH_(2)CONH_(2)`

D

`C_(6)H_(5)NHNH_(2).HCl`

Text Solution

Verified by Experts

The correct Answer is:
B
For Lassaigne's test on N, compound must contain N in addition to C to form NaCN in sodium extract.
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