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

Lassaigne's test for the detection of nitrogen fails in which of the following

A

`H_2N- CO0 NHNH_2. HCL`

B

`NH_2-NH_2.HCL`

C

`NH_4-CO-NH_2`

D

`C_6H_5- NH- NH_4.HCl`

Text Solution

Verified by Experts

The correct Answer is:
B
Lassaigne.s test is given by those nitrogenous compounds in which carbonin also present alongwith nitrogen.
IN `NH_2.NH_2.HCl` carbon is absent, so it does not give Lassaigne.s test.
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