Which of the following compounds lacks carbon atoms and consequently FAILS to give a positive Lassaigne's test for nitrogen upon sodium fusion? | Practical Organic Chemistry and Purification — Chem-Mantra | Chem-Mantra

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Question

Which of the following compounds lacks carbon atoms and consequently FAILS to give a positive Lassaigne's test for nitrogen upon sodium fusion?

Answer: B

💡 Solution & Explanation

Lassaigne's test for nitrogen requires the formation of $NaCN$. Hydrazine contains nitrogen but no carbon, making $NaCN$ formation impossible.

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