List of top Chemistry Questions on Qualitative Analysis asked in NEET (UG)

During Lassaigne's test, the elements present in an organic compound are converted from:

In a test tube containing a salt, a few drops of dilute \({H2SO4}\) was added, which gave colourless vapours having the smell of vinegar. The vapours turned blue litmus paper red. Identify the correct anion from the following.

The correct order of increasing metallic character of \(Na\), \(Be\), \(Mg\), \(Si\) and \(P\) is:

Match List I with List II:

Choose the correct answer from the options given below:

Match List-I with List-II :
List - I(Test/reagent)List - II(Radical identified)
(A) Lake Test(I) NO3−
(B) Nessler’s Reagent(II) Fe3+
(C) Potassium sulphocyanide(III) Al3+
(D) Brown Ring Test (IV) NH4+
Identify the correct answer from the options given below :
Match List-I with List-II :
List - ISolid salt treated with dil. H2SO4List - IIAnion detected
(A) effervescence of colourless gas(I) NO2−
(B) gas with smell of rotten egg(II) CO32−
(C) gas with pungent smell(III) S2−
(D) brown fumes (IV) SO23−
Identify the correct answer from the options given below :