1.

Which of the following compounds may give blood red colouration while performing Lassaigne's test for nitrogen?

Answer»

`(NH_(2))_(2)CO`
`(NH_(2))_(2)C=S`
`p-NH_(2)C_(6)H_(4)SO_(3)H`
`C_(6)H_(5)SO_(3)H`

Answer :B::C


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