MCQ
The Lassiagne's extract is boiled with dil HNO3 before testing for halogens because,
- AAgCN is soluble in $HNO _3$
- BSilver halides are soluble in $HNO _3$
- C$Ag _2 S$ is soluble $HNO _3$
- ✓$Na _2 S$ and NaCN are decomposed by $HNO _3$
✓
Answer
Correct option: D.
$Na _2 S$ and NaCN are decomposed by $HNO _3$
(D)
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
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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