Class 11Chemistry8-3.Organic Chemistry : Purification and characterizationChemical analysis of organic compounds
DifficultSodium extract is heated with concentrated $HNO_3$ before testing for halogens because
- A$Ag_2S$ and $AgCN$ are soluble in acidic medium
- BSilver halides are totally insoluble in nitric acid
- C$S^{2-}$ and $CN^{-}$ ions,if present,are decomposed by conc. $HNO_3$ and hence do not interfere in the test
- D$Ag$ reacts faster with halides in acidic medium
Explore More
Similar Questions
Match Column $-I$ with Column $-II$.
Column $-I$ Column $-II$ $(A).$ Dumas method $(3).$ Nitrogen gas $(B).$ Kjeldahl's method $(5).$ Ammonium sulphate $(C).$ Carius method $(1).$ $AgNO_3$ $(D).$ Chromatography $(2).$ Silica gel $(E).$ Homolytic fission $(4).$ Free radical
| Column $-I$ | Column $-II$ |
|---|---|
| $(A).$ Dumas method | $(3).$ Nitrogen gas |
| $(B).$ Kjeldahl's method | $(5).$ Ammonium sulphate |
| $(C).$ Carius method | $(1).$ $AgNO_3$ |
| $(D).$ Chromatography | $(2).$ Silica gel |
| $(E).$ Homolytic fission | $(4).$ Free radical |
Easy
View SolutionIn the test for halogens,why is nitric acid added to the sodium fusion extract before adding silver nitrate?
Easy
View SolutionThe volume of nitrogen is measured by which apparatus in the Dumas method?
Easy
View SolutionMatch List-$I$ with List-$II$.
List-$I$ (Functional group detection) List-$II$ (Change observed during detection) $A$. Unsaturation (Baeyer's test) $I$. Red colour appears $B$. Alcoholic group (Ceric ammonium nitrate test) $II$. Silver mirror appears $C$. Aldehyde group (Tollen's reagent) $III$. Violet colour appears $D$. Phenolic group ($FeCl_3$ test) $IV$. Discharge of pink colour
Choose the correct answer from the options given below:
| List-$I$ (Functional group detection) | List-$II$ (Change observed during detection) |
|---|---|
| $A$. Unsaturation (Baeyer's test) | $I$. Red colour appears |
| $B$. Alcoholic group (Ceric ammonium nitrate test) | $II$. Silver mirror appears |
| $C$. Aldehyde group (Tollen's reagent) | $III$. Violet colour appears |
| $D$. Phenolic group ($FeCl_3$ test) | $IV$. Discharge of pink colour |
Choose the correct answer from the options given below:
DifficultJEE MAIN 2026
View SolutionDuring Lassaigne's test,if $N$ and $S$ are present individually in an organic compound,they are converted into:
Medium
View SolutionVedclass Products
For Students
Vedclass Test Series
Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.
Start Free TrialFor Teachers
Exam Paper Generator
Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.
Try FreeFor Institutes
Online Exam Module
Live online exams with unlimited students, 360° analytics & white-label branding.
See Demo