Class 11Chemistry8-3.Organic Chemistry : Purification and characterizationChemical analysis of organic compounds
EasyIn $Kjeldahl’s$ method,$CuSO_4$ acts as
- AOxidising agent
- BReducing agent
- CHydrolysing agent
- DCatalytic agent
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Similar Questions
In organic compounds,nitrogen is tested in Lassaigne's test as:
Medium
View SolutionMatch the List-$I$ with List-$II$:
List-$I$ (Reagent) List-$II$ (Functional Group detected) $A$. Sodium bicarbonate solution $I$. Double bond/unsaturation $B$. Neutral ferric chloride $II$. Carboxylic acid $C$. Ceric ammonium nitrate $III$. Phenolic $-OH$ $D$. Alkaline $KMnO_4$ $IV$. Alcoholic $-OH$
Choose the correct answer from the options given below:
| List-$I$ (Reagent) | List-$II$ (Functional Group detected) |
| $A$. Sodium bicarbonate solution | $I$. Double bond/unsaturation |
| $B$. Neutral ferric chloride | $II$. Carboxylic acid |
| $C$. Ceric ammonium nitrate | $III$. Phenolic $-OH$ |
| $D$. Alkaline $KMnO_4$ | $IV$. Alcoholic $-OH$ |
Choose the correct answer from the options given below:
DifficultJEE MAIN 2025
View SolutionLassaigne's test for nitrogen is negative for which compound?
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. |
The blue color obtained in the Lassaigne's test is due to the formation of which compound?
Difficult
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