JEE Main Chemistry — Organic Chemistry previous year questions with solutions.
Nitrogen can be estimated by Kjeldahl's method for which of the following compound?
Which purification technique is used for high boiling organic liquid compound (decomposes near its boiling point) ?
$0.8g$ of an organic compound was analysed by Kjeldahl's method for the estimation of nitrogen. If the percentage of nitrogen in the compound was found to be $42%$, then....... $\mathrm{mL}$ of $1M$ ${H}_{2}{\mathrm{SO}}_{4}$ would have been neutralized by the ammonia evolved during the analysis.
Carbylamine test is used to detect the presence of primary amino group in an organic compound. Which of the following compound is formed when this test is performed with aniline?
Identify $A$ in the following reaction. 
Staggered and eclipsed conformers of ethane are:
 The product "$P$" in the above reaction is :
 In the above chemical reaction, intermediate "$X$" and reagent/condition "$A$" are :
Primary, secondary and tertiary amines can be separated using:
For the following sequence of reactions, the correct products are : 
The major products $A$ and $B$ in the following set of reactions are: 
Which one of the following pairs of isomers is an example of metamerism?
In the following sequence of reactions, the final product $D$ is: 
Identify $A$ in the given chemical reaction. 
In Tollen's test for aldehyde, the overall number of electron(s) transferred to the Tollen's reagent formula ${[\mathrm{Ag}{({\mathrm{NH}}_{3})}_{2}]}^{+}$ per aldehyde group to form silver mirror is ___.(Round off to the Nearest integer)
The number of moles of $\mathrm{CuO},$ that will be utilized in Dumas method for estimating nitrogen in a sample of $57.5g$ of $N,N-$dimethylaminopentane is ________ $\times {10}^{-2}.$ (Nearest integer)
 Identify the reagent(s) '$A$' and condition(s) for the reaction :
Which one of the following reactions does not occur ?
Experimentally reducing a functional group cannot be done by which one of the following reagents ?
What is the correct sequence of reagents used for converting nitrobenzene into $m$-dibromobenzene?
An organic compound $A({C}_{6}{H}_{6}O)$ gives dark green colouration with ferric chloride. On treatment with ${\mathrm{CHCl}}_{3}$ and $\mathrm{KOH},$ followed by acidification gives compound $B.$ Compound $B$ can also be obtained from compound $C$ on reaction with pyridinium chlorochromate (PCC). Identify $A,B$ and $C.$
Benzene reacts with chlorine in the presence of FeCl₃ to give:
What is the final product (major) '$A$' in the given reaction?  Major product among the following is?
Which of the following compound gives pink colour on reaction with phthalic anhydride in conc. ${H}_{2}{\mathrm{SO}}_{4}$ followed by treatment with $\mathrm{NaOH}$?