Compound that will give positive Lassaigne’s test for both nitrogen and halogen is
Select the correct option:
A
$\mathrm{N}_2 \mathrm{H}_4 \cdot \mathrm{HCl}$
B
$\mathrm{CH}_3 \mathrm{NH}_2 \cdot \mathrm{HCl}$
C
$\mathrm{NH}_4 \mathrm{Cl}$ (4)
D
$\mathrm{NH}_4 \mathrm{Cl}$
✓ Correct! Well done.
✗ Incorrect. Try again or view the solution.
Solution
Sol.
$\mathrm{CH}_3 \mathrm{NH}_2 \cdot \mathrm{HCl} \longrightarrow \mathrm{NaCN}$ and NaCl
NaCN gives +ve test for nitrogen and NaCl gives +ve test for halogen
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