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JEE Main202329 Jan 2023Morning ShiftChemistryGeneral Organic ChemistryActual

Compound that will give positive Lassaigne's test for both nitrogen and halogen is

Options

  1. AN 2 H 4 · HCl
  2. BCH 3 NH 2 . HCl
  3. CNH 4 Cl
  4. DNH 2 OH . HCl

Correct answer

B. CH 3 NH 2 . HCl

Step-by-step solution

Lassaigne's test gives presence of chlorine and nitrogen in organic compound by fusion of organic compound in the presence of sodium. The fused products in this case are: CH 3 NH 2 . HCl → fusion Na NaCN   and   NaCl NaCN gives +ve test for nitrogen and NaCl gives +ve test for halogen.

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