1.

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

Answer»

Nitrobenzene
Hydroxylamine
Dimethylamine
Hydrazine

Solution :Hydroxylamine , `NH_2 OH` and hydrazine , `H_(2) N- NH_(2)` do not give Lassaigne.s test for nitrogen . As no carbon is present in these COMPOUNDS , the sodium extract obtained in these cases do not contain any NaCN.


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