Which of the following compounds is not expected to show Lassaignes’ test for nitrogen ?

Question

Which of the following compounds is not expected to show Lassaignes’ test for nitrogen ? (A) Propanenitrile (B) Hydroxylamine hydrochloride (C) Nitromethane (D) Ethanamine

Tardigrade Admin · Accepted Answer

Lassaigne’s test is used for the detection of nitrogen and given by all nitrogenous compound except diazo

(- N = N -)

compounds.
This test is shown only by the compounds containing

C

and

N

both hence hydroxyl amine hydrochloride

(H_{2} NO H . H Cl)

will not perform this test.

Q. Which of the following compounds is not expected to show Lassaignes’ test for nitrogen ?

Propanenitrile

Hydroxylamine hydrochloride

Nitromethane

Ethanamine

Lassaigne’s test is used for the detection of nitrogen and given by all nitrogenous compound except diazo (−N=N−) compounds. This test is shown only by the compounds containing C and N both hence hydroxyl amine hydrochloride (H2​NOH.HCl) will not perform this test.

Lassaigne’s test is used for the detection of nitrogen and given by all nitrogenous compound except diazo $(- N = N -)$ compounds.
This test is shown only by the compounds containing $C$ and $N$ both hence hydroxyl amine hydrochloride $(H_{2} NO H . H Cl)$ will not perform this test.