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NEET2026ChemistryGeneral Organic ChemistryActual

During Lassaigne's test, the elements present in an organic compound are converted from :

Options

  1. Aionic form to ionic form
  2. Bcovalent form to ionic form
  3. Ccovalent form to covalent form
  4. Dionic form to covalent form

Correct answer

B. covalent form to ionic form

Step-by-step solution

In Lassaigne's test, an organic compound is fused with sodium metal. The elements present in the organic compound, such as nitrogen, sulphur, and halogens, are initially present in covalent form. During the fusion process, these elements react with sodium to form ionic sodium salts. For example, nitrogen and carbon form sodium cyanide ( NaCN ), sulphur forms sodium sulphide ( Na ₂ S ), and halogens form sodium halides ( NaX ). Therefore, the elements are converted from covalent form to ionic form. Answer: covalent

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