Class 11Chemistry8-3.Organic Chemistry : Purification and characterizationChemical analysis of organic compounds
DifficultThe Lassaigne's extract is boiled with dilute $HNO_3$ before testing for halogens because,
- A$AgCN$ is soluble in $HNO_3$
- BSilver halides are soluble in $HNO_3$
- C$Ag_2S$ is soluble in $HNO_3$
- D$Na_2S$ and $NaCN$ are decomposed by $HNO_3$
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Similar Questions
The Kjeldahl's method for the estimation of nitrogen can be used to estimate the amount of nitrogen in which one of the following compounds?
In organic compounds,nitrogen is tested in Lassaigne's test as:
Medium
View SolutionThe organic compound that gives the following qualitative analysis is:
Test Inference $a$. Dil. $HCl$ Insoluble $b$. $NaOH$ solution Soluble $c$. $Br_2/\text{water}$ Decolourization
| Test | Inference |
|---|---|
| $a$. Dil. $HCl$ | Insoluble |
| $b$. $NaOH$ solution | Soluble |
| $c$. $Br_2/\text{water}$ | Decolourization |
DifficultJEE MAIN 2019
View SolutionWhen sodium fusion extract of an organic compound is boiled with iron$(II)$ sulphate solution followed by addition of concentrated $H_2SO_4$,it gives a Prussian blue colour. This confirms the presence of which element?
The sodium fusion extract is boiled with concentrated nitric acid while testing for halogens. By doing so,it
MediumKCET 2025
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