Class 11Chemistry8-3.Organic Chemistry : Purification and characterizationChemical analysis of organic compounds
EasyThe gases respectively absorbed by alkaline pyrogallol and oil of cinnamon are:
- A$O_{3}, CH_{4}$
- B$O_{2}, O_{3}$
- C$SO_{2}, CH_{4}$
- D$N_{2}O, O_{3}$
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Similar Questions
Which compound is responsible for the formation of a blue precipitate when ferric ions react with a Lassaigne's extract or potassium ferrocyanide solution?
Medium
View SolutionThe Lassaigne's extract is boiled with dilute $HNO_3$ before testing for halogens because,
DifficultAIIMS 2012
View SolutionMatch the compounds in Column $I$ with their characteristic test$(s)$ reaction$(s)$ given in Column $II$.
Column $I$ Column $II$ $A. H_2N-NH_3^+Cl^-$ $p. \text{Sodium fusion extract of the compound gives Prussian blue colour with } FeSO_4$ $B. HO-C_6H_4-CH(NH_3^+)COOH \text{ (with } I^- \text{ counterion)}$ $q. \text{Gives positive } FeCl_3 \text{ test}$ $C. HO-C_6H_4-NH_3^+Cl^-$ $r. \text{Gives white precipitate with } AgNO_3$ $D. (NO_2)_2C_6H_3-NH-NH_3^+Br^-$ $s. \text{Reacts with aldehydes to form the corresponding hydrazone derivative}$
| Column $I$ | Column $II$ |
|---|---|
| $A. H_2N-NH_3^+Cl^-$ | $p. \text{Sodium fusion extract of the compound gives Prussian blue colour with } FeSO_4$ |
| $B. HO-C_6H_4-CH(NH_3^+)COOH \text{ (with } I^- \text{ counterion)}$ | $q. \text{Gives positive } FeCl_3 \text{ test}$ |
| $C. HO-C_6H_4-NH_3^+Cl^-$ | $r. \text{Gives white precipitate with } AgNO_3$ |
| $D. (NO_2)_2C_6H_3-NH-NH_3^+Br^-$ | $s. \text{Reacts with aldehydes to form the corresponding hydrazone derivative}$ |
In Lassaigne's extract of an organic compound,both nitrogen and sulphur are present,which gives blood red colour with $Fe^{3+}$ due to the formation of-
MediumNEET 2023
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
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