Class 11Chemistry8-3.Organic Chemistry : Purification and characterizationChemical analysis of organic compounds
EasyIn $Lassaigne's$ test,the organic compound is fused with $Na$ metal followed by extraction with distilled water. Which of the following is not a possible product of this fusion reaction?
- A$NaX$
- B$NaCN$
- C$NaNC$
- D$Na_2S$
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The Middleton test is used for the detection of which element?
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View SolutionThe fusion of sodium with an organic compound containing nitrogen gives mainly:
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View SolutionIn the detection of halogens,what is formed by adding $AgNO_3$? What is its colour?
Easy
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. |
Sodium extract is heated with concentrated $HNO_3$ before testing for halogens because
DifficultJEE MAIN 2016
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