JEE Main Chemistry — Organic Chemistry previous year questions with solutions.
The number of $s{p}^{2}$ hybrid orbitals in a molecule of benzene is:
The major product of the following reaction is : 
The $\mathrm{IUPAC}$ name for the following compound is : 
The final major product of the following reaction is : 
Consider the following reactions:  'A' is
What are the functional groups present in the structure of maltose?
Match the following : <table class="pyq-table"><tbody><tr><td></td><td>Test/Method</td><td></td><td>Reagent</td></tr><tr><td>(i)</td><td>Lucas Test</td><td>(a)</td><td>${C}_{6}{H}_{5}{\mathrm{SO}}_{2}\mathrm{Cl}/\mathrm{aq}.\mathrm{KOH}$</td></tr><tr><td>(ii)</td><td>Dumas method</td><td>(b)</td><td>${\mathrm{HNO}}_{3}/{\mathrm{AgNO}}_{3}$</td></tr><tr><td>(iii)</td><td>Kjeldahl's method</td><td>(c)</td><td>$\mathrm{CuO}/{\mathrm{CO}}_{3}$</td></tr><tr><td>(iv)</td><td>Hinsberg Test</td><td>(d)</td><td>Conc. $\mathrm{HCl}$ and ${\mathrm{ZnCl}}_{2}$</td></tr><tr><td></td><td></td><td>(e)</td><td>${H}_{2}{\mathrm{SO}}_{4}$</td></tr></tbody></table>
Glycerol is separated in soap industries by :
In Carius method of estimation of halogen, $0.172g$ of an organic compound showed presence of $0.08g$ of bromine. Which of these is the correct structure of the compound ?
A chromatography column, packed with silica gel as stationary phase, was used to separate a mixture of compounds consisting of $(A)$ benzanilide $(B)$ aniline and $(C)$ acetophenone. When the column is eluted with a mixture of solvents, hexane:ethyl acetate $(20:80)$ , the sequence of obtained compounds is:
A solution of $m-$ chloroaniline, $m-$ chlorophenol and $m-$ chlorobenzoic acid in ethyl acetate was extracted initially with a saturated solution of $NaHC{O}_{3}$ to give fraction $A$ . The left over organic phase was extracted with dilute $NaOH$ solution to give fraction $B$ . The final organic layer was labelled as fraction $C$ . Fractions $A,B$ and $C,$ contain respectively:
The major product formed in the following reaction is : ${\mathrm{CH}}_{2}\mathrm{CH}=\mathrm{CHCH}{({\mathrm{CH}}_{3})}_{2}\overset{\mathrm{HBr}}{\rightarrow }$
In the following reaction sequence the major products $A$ and $B$ are : 
The major product of the following reaction is: 
The total number of monohalogenated organic products in the following (including stereoisomers) reaction is $\underset{(\mathrm{Simplest}\mathrm{optically} \mathrm{active}\mathrm{alkene})}{A}\rightarrow _{(\mathrm{ii}){X}_{2}/\Delta }^{(i){H}_{2}/\mathrm{Ni}/\Delta }$
The correct order of heat of combustion for following alkadienes is: 
Consider the following plots of rate constant versus $\frac{1}{T}$ for four different reactions. Which of the following orders is correct for the activation energies of these reactions? 
The major product obtained from the following reaction is : 
The major products of the following reaction are : 
The major product obtained from ${E}_{2}$-elimination of $3-\mathrm{bromo}-2-\mathrm{fluoropentane}$ is
In the following reaction sequence,  the major product $B$ is
The IUPAC name of the following compound is: 
Consider the following reaction:  The product$'P'$gives positive ceric ammonium nitrate test. This is because of the presence of which of these$–\mathrm{OH}$ group(s)?
The major product of the following reaction is : 