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For which of the following compounds Las...

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

A

`H_2N CO NH NH_2 * HCl`

B

`H_(2) N NH_(2) * 2HCl`

C

`H_(2) N CONH_(2)`

D

`C_(6) H_(5) - N = N - C_(6) H_(5)`

Text Solution

Verified by Experts

The correct Answer is:
B
`H_(2) N NH_(2) * 2HCl` does not contain carbon , hence does not give positive results for Lassaigne.s test for nitrogen.
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