JEE Main Chemistry — Organic Chemistry previous year questions with solutions.
In the following sequence of reactions, the alkene affords the compound ' $B$ ' $\mathrm{CH}_3 \mathrm{CH}=\mathrm{CHCH}_3 \stackrel{\mathrm{O}_3}{\longrightarrow} \mathrm{A} \stackrel{\mathrm{H}_2 \mathrm{O}}{\mathrm{Zn}} \mathrm{B}$. The compound $\mathrm{B}$ is
Phenol, when it first reacts with concentrated sulphuric acid and then with concentrated nitric acid, gives
The absolute configuration of  is
The organic chloro compound, which shows complete stereochemical inversion during a $\mathrm{S}_{\mathrm{N}} 2$ reaction, is
The electrophile, $\mathrm{E}^{\oplus}$ attacks the benzene ring to generate the intermediate $\sigma$-complex. Of the following, which $\sigma$-complex is of lowest energy?
$\alpha-D-(+)$-glucose and $\beta-D-(+)-g l u c o s e ~ a r e$
In the following sequence of reactions,  the compound ' $\mathrm{D}$ ' is
Which of the following reactions will yield $2, 2-$dibromopropane?
In the chemical reaction, $\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{NH}_2-\mathrm{CHCl}_3+3 \mathrm{KOH} \longrightarrow(\mathrm{A})+(\mathrm{B})+3 \mathrm{H}_2 \mathrm{O}$, the compound $\mathrm{(A)}$ and $\mathrm{(B)}$ are respectively
Presence of a nitro group in a benzene ring
The reaction of toluene with $\mathrm{Cl}_2$ in presence of $\mathrm{FeCl}_3$ gives predominantly
The IUPAC name of  is
Which of the following molecules is expected to rotate the plane of plane polarized light?
Which one of the following conformation of cyclohexane is chiral?
The compound formed as a result of oxidation of ethyl benzene by $\mathrm{KMnO}_4$ is
The secondary structure of a protein refers to
Which one of the following is the strongest base in aqueous solution?
Which of the following is the correct order of decreasing $\mathrm{SN}^2$ reactivity?
The increasing order of stability of the following free radicals is
$\mathrm{HBr}$ reacts with $\mathrm{CH}_2=\mathrm{CH}-\mathrm{OCH}_3$ under anhydrous conditions at room temperature to give
 The electrophile involved in the above reaction is
The correct order of increasing acid strength of the compounds is (a) $\mathrm{CH}_3 \mathrm{CO}_2 \mathrm{H}$ (b) $\mathrm{MeOCH}_2 \mathrm{CO}_2 \mathrm{H}$ (c) $\mathrm{CF}_3 \mathrm{CO}_2 \mathrm{H}$ (d) 
The increasing order of the rate of $\mathrm{HCN}$ addition to compounds $\mathrm{A}-\mathrm{D}$ is (A) $\mathrm{HCHO}$ (B) $\mathrm{CH}_3 \mathrm{COCH}_3$ (C) $\mathrm{PhCOCH}_3$ (D) PhCOPh
