MCQ
Lassaigne's test for the detection of nitrogen fails in
- A$N{H_2}CONHN{H_2}.HCl$
- ✓$N{H_2}N{H_2}.HCl$
- C$N{H_2}CON{H_2}$
- D${C_6}{H_5}NHN{H_2}.HCl$
✓
Answer
Correct option: B.
$N{H_2}N{H_2}.HCl$
b
(b) Some compound like hydrazine $(N{H_2}N{H_2})$ although contain nitrogen, they do not respond lassaigne's test because they do not have any carbon & hence $NaCN$ is not formed.
(b) Some compound like hydrazine $(N{H_2}N{H_2})$ although contain nitrogen, they do not respond lassaigne's test because they do not have any carbon & hence $NaCN$ is not formed.
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→$\begin{array}{*{20}{c}}
{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,C{H_3}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,C{H_2} - C{H_3}} \\
{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|} \\
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{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
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\end{array}$