1.

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

Answer»

`NH_(2)CONHNH_(2)HCl`
`NH_(2)NH_(2)2HCl`
`H_(2)NCONH_(2)`
`C_(6)H_(5)-N=N-C_(6)H_(5)`

Answer :B


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