Vedclass
Class 11Chemistry8-3.Organic Chemistry : Purification and characterizationChemical analysis of organic compounds
Medium

The Lassaigne's extract is boiled with conc. $HNO_3$ while testing for halogens. By doing so it

AIPMT 2011All AIPMT
  • A
    decomposes $Na_2S$ and $NaCN$ formed
  • B
    helps in the precipitation of $AgCl$
  • C
    increases the solubility product of $AgCl$
  • D
    increases the concentration of $NO_3^-$ ions
Share

Explore More

Browse All

Question Bank

11

All Subjects

Class 11 Questions

Class 11

Chemistry Questions

Chapter

8-3.Organic Chemistry : Purification and characterization

Subtopic

Chemical analysis of organic compounds

Previous Year

AIPMT 2011 PaperAll AIPMT years →

Similar Questions

Match 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:

DifficultJEE MAIN 2026
View Solution

For testing halogens in an organic compound with $AgNO_{3}$ solution,sodium extract (Lassaigne's test) is acidified with dilute $HNO_{3}$. What will happen if a student acidifies the extract with dilute $H_{2}SO_{4}$ in place of dilute $HNO_{3}$?

Medium
View Solution

In the Lassaigne's test for nitrogen in an organic compound,the Prussian blue colour is obtained due to the formation of:

Medium
View Solution

The formula of the purple colour formed in $Lassaigne's$ test for sulphur using sodium nitroprusside is ......

MediumJEE MAIN 2022
View Solution

Why is nitric acid added to sodium extract before adding silver nitrate for testing halogens?

Medium
View Solution

Vedclass Products

For Students

Vedclass Test Series

Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.

Start Free Trial
For Teachers

Exam Paper Generator

Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.

Try Free
For Institutes

Online Exam Module

Live online exams with unlimited students, 360° analytics & white-label branding.

See Demo