Verified Solution • 2025–26 Session moderate

QJEEM24Ch3237: JEE Main 2024 Chemistry - Class 12 JEEM24Ch3237 Solution: The Lassiagne's extract is boiled with dil before testing for…

The Lassiagne's extract is boiled with dil HNO3\mathrm{HNO}_3 before testing for halogens because,

Multiple Choice Options

  • A Silver halides are soluble in HNO3\mathrm{HNO}_3 .
  • B AgCN\mathrm{AgCN} is soluble in HNO3\mathrm{HNO}_3 .
  • C Na2S\mathrm{Na}_2 \mathrm{S} and NaCN\mathrm{NaCN} are decomposed by HNO3\mathrm{HNO}_3 .
  • D Ag2S\mathrm{Ag}_2 \mathrm{S} is soluble in HNO3\mathrm{HNO}_3 .

Step-by-Step Verified Solution

If nitrogen or sulphur is also present in the compound, the sodium fusion extract is first boiled with concentrated nitric acid to decompose cyanide or sulphide of sodium during Lassaigne's test

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