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For which of the following compounds Las...

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

A

Nitrobenzene

B

Hydroxylamine

C

Dimethyl lamine

D

Hydrazine

Text Solution

Verified by Experts

The correct Answer is:
B, D
Hydroxylamine, `NH_2OH` and hydrazine, `H_2N-H_2` do not give Lassaigne's test for nitrogen. As no carbon is present in these compounds, the sodium extract obtained in these cases donot contain any NaCN.
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