Class 11Chemistry8-3.Organic Chemistry : Purification and characterizationChemical analysis of organic compounds
EasyIn the Lassaigne's test for the detection of sulfur,which substance is responsible for the formation of black precipitates?
- A$Na_2S$
- B$(CH_3COO)_2Pb$
- C$PbS$
- D$CH_3COOH$
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Similar Questions
The gases respectively absorbed by alkaline pyrogallol and oil of cinnamon are:
The blue color obtained in the Lassaigne's test is due to the formation of which compound?
Difficult
View SolutionConsider the following table$-$
Column-$I$
Column-$II$
$A$. Best and latest technique for isolation,purification and separation of organic compounds
$i$. Chromatography
$B$. In Lassaigne's test for $N$
$ii$. Vacuum distillation
$C$. In Lassaigne's test for $S$
$iii$. Violet coloured complex is formed
$D$. Aniline is separated from water by
$iv$. Prussian blue coloured complex is formed
$E$. Glycerol is purified from spent lye
$v$. Steam distillation
The correct match is$-$
| Column-$I$ | Column-$II$ |
|---|---|
| $A$. Best and latest technique for isolation,purification and separation of organic compounds | $i$. Chromatography |
| $B$. In Lassaigne's test for $N$ | $ii$. Vacuum distillation |
| $C$. In Lassaigne's test for $S$ | $iii$. Violet coloured complex is formed |
| $D$. Aniline is separated from water by | $iv$. Prussian blue coloured complex is formed |
| $E$. Glycerol is purified from spent lye | $v$. Steam distillation |
The correct match is$-$
Medium
View SolutionWhat happens to the halogen when $AgNO_3$ is added to the Lassaigne solution acidified with $HNO_3$?
Easy
View SolutionThe formula of the purple colour formed in $Lassaigne's$ test for sulphur using sodium nitroprusside is ......
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