NEET 2026 (Phase 1) · ChemistryPrevious Year Question
During Lassaigne's test, the elements present in an organic compound are converted from:
Answer: (B) Covalent form to ionic form. \textbf{Answer:} (b) \textbf{Solution:} In Lassaigne's (sodium fusion) test the organic compound is fused with sodium metal.
- A.Ionic form to ionic form
- B.Covalent form to ionic form✓
- C.Covalent form to covalent form
- D.Ionic form to covalent form
Correct Answer
(B) Covalent form to ionic form
Solution & Explanation
\textbf{Answer:} (b) \textbf{Solution:} In Lassaigne's (sodium fusion) test the organic compound is fused with sodium metal. This converts the covalently bonded elements (N, S, halogens) present in the compound into their water-soluble ionic forms (, , , etc.), which are then detected by inorganic qualitative tests. Hence the covalent form is converted to the ionic form.
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