Class 11Chemistry8-3.Organic Chemistry : Purification and characterizationChemical analysis of organic compounds
MediumThe copper wire test for halogens is known as:
- ADuma's Test
- BBeilstein's Test
- CLiebig's Test
- DLassaigne's Test
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Similar Questions
Match 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 $FeSO_4$ |
DifficultJEE MAIN 2015
View SolutionWhich of the following compounds will give a positive Lassaigne's test for both nitrogen and halogen?
DifficultJEE MAIN 2023
View SolutionMatch the compounds in List-$I$ with the observations in List-$II$,and choose the correct option.
List-$I$ List-$II$ $I$. Aniline $P$. Sodium fusion extract of the compound on boiling with $FeSO_4$,followed by acidification with conc. $H_2SO_4$,gives Prussian blue color. $II$. $o$-Cresol $Q$. Sodium fusion extract of the compound on treatment with sodium nitroprusside gives blood red color. $III$. Cysteine $R$. Addition of the compound to a saturated solution of $NaHCO_3$ results in effervescence. $IV$. Caprolactam $S$. The compound reacts with bromine water to give a white precipitate. $T$. Treating the compound with neutral $FeCl_3$ solution produces violet color.
| List-$I$ | List-$II$ |
|---|---|
| $I$. Aniline | $P$. Sodium fusion extract of the compound on boiling with $FeSO_4$,followed by acidification with conc. $H_2SO_4$,gives Prussian blue color. |
| $II$. $o$-Cresol | $Q$. Sodium fusion extract of the compound on treatment with sodium nitroprusside gives blood red color. |
| $III$. Cysteine | $R$. Addition of the compound to a saturated solution of $NaHCO_3$ results in effervescence. |
| $IV$. Caprolactam | $S$. The compound reacts with bromine water to give a white precipitate. |
| $T$. Treating the compound with neutral $FeCl_3$ solution produces violet color. |
Give the chemical reaction for the detection of nitrogen in an organic compound using the Lassaigne's test.
Easy
View SolutionWhy is nitric acid $(HNO_3)$ added to sodium extract before adding silver nitrate $(AgNO_3)$ for testing halogens?
Easy
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