Class 11Chemistry8-3.Organic Chemistry : Purification and characterizationChemical analysis of organic compounds
MediumAcidified sodium fusion extract on addition of ferric chloride solution gives blood red colouration,which confirms the presence of:
- A$S$ and $Cl$
- B$N$ and $S$
- C$N$
- D$S$
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The formula of the purple colour formed in $Lassaigne's$ test for sulphur using sodium nitroprusside is ......
Which of the following compounds will give a positive Lassaigne's test for both nitrogen and halogen?
DifficultJEE MAIN 2023
View SolutionIn the Lassaigne's test for the detection of sulfur,which substance is responsible for the formation of black precipitates?
Easy
View SolutionMatch the organic compounds in column $I$ with the Lassaigne's test results in column $II$ appropriately.
Column $I$ Column $II$ $A$. Aniline $i$. Red colour with $FeCl_3$ $B$. Benzene sulfonic acid $ii$. Violet colour with sodium nitroprusside $C$. Thiourea $iii$. Blue colour with hot and acidic solution of $FeSO_4$
| Column $I$ | Column $II$ |
|---|---|
| $A$. Aniline | $i$. Red colour with $FeCl_3$ |
| $B$. Benzene sulfonic acid | $ii$. Violet colour with sodium nitroprusside |
| $C$. Thiourea | $iii$. Blue colour with hot and acidic solution of $FeSO_4$ |
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View SolutionWhy is nitric acid added to sodium extract before adding silver nitrate for testing halogens?
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