Question

The compound formed upon subjecting an aliphatic amine to Lassaigne’s test is

• A. NaNH$_2$
• B. NaNO$_2$
• C. NaCN
• D. NaN$_3$

Hint:

Lassaigne’s test can be used to detect nitrogen in organic compounds, forming sodium azide (NaN$_3$) when an amine is present.

Answer 1

The Correct Option is C

Step 1: Understanding Lassaigne’s test.
Lassaigne’s test is used for detecting halogens, nitrogen, and sulfur in organic compounds. When an amine (like an aliphatic amine) is heated with sodium metal in fusion, sodium azide (NaN$_3$) is formed if nitrogen is present.
Step 2: Conclusion.
Upon subjecting an aliphatic amine to Lassaigne’s test, the product formed is sodium azide (NaN$_3$), corresponding to option (D).