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The Lassaigne's extract is boiled with conc. while testing for halogens. By doing so it:

  1. A
    Increases the concentration of ions
  2. B
    Decomposes and , if formed
  3. C
    Helps in the precipitation of
  4. D
    Increases the solubility product of

Solution & Step-by-step Explanation

If Nitrogen or Sulphur are present, the extract contains or . These would react with to form white/black precipitates that interfere with the halogen test. Boiling with decomposes them into gases ( and ).

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The Lassaigne's extract is boiled with conc. while testing for halogens. By doing so it:
A
Increases the concentration of ions
B
Decomposes and , if formed
C
Helps in the precipitation of
D
Increases the solubility product of

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