JEE Main Chemistry — Organic Chemistry previous year questions with solutions.
Excess of isobutane on reaction with ${\mathrm{Br}}_{2}$ in presence of light at $125^{\circ}C$ gives which one of the following, as the major product?
 Correct statement about the given chemical reaction is
 In the above reaction, the reagent "$A$" is :
The major product formed in the following reaction is: 
In the following sequence of reactions a compound $A,$ (molecular formula ${C}_{6}{H}_{12}{O}_{2}$ ) with a straight chain structure gives a ${C}_{4}$ carboxylic acid. $A$ is : $A\frac{{\mathrm{LiAlH}}_{4}}{{H}_{3}{O}^{+}}B\overset{\text{ Oxidation }}{\longrightarrow }{C}_{4}-$ carboxylic acid
Which of the following reagent is used for the following reaction? ${\mathrm{CH}}_{3}{\mathrm{CH}}_{2}{\mathrm{CH}}_{3}\overset{?}{\rightarrow }{\mathrm{CH}}_{3}{\mathrm{CH}}_{2}\mathrm{CHO}$
The major product of the following reaction is :${\mathrm{CH}}_{3}{\mathrm{CH}}_{2}\mathrm{CH}={\mathrm{CH}}_{2}\rightarrow _{\mathrm{Rh}\mathrm{catalyst}}^{{H}_{2}/\mathrm{CO}}$
Which one of the following carbonyl compounds cannot be prepared by addition of water on an alkyne in the presence of ${\mathrm{HgSO}}_{4}$ and ${H}_{2}{\mathrm{SO}}_{4}?$
Identify products $A$ and $B.$ 
A reaction of benzonitrile with one equivalent ${\mathrm{CH}}_{3}\mathrm{MgBr}$ followed by hydrolysis produces a yellow liquid "P". The compound "P" will give positive ________
The major product of the following reaction is : 
Which of the following compounds will show optical isomerism?
 Consider the above chemical reaction. The total number of stereoisomers possible for Product "P" is _________
In Duma's method of estimation of nitrogen, $0.1840g$ of an organic compound gave $30\mathrm{mL}$ of nitrogen collected at $287K$ and $758\mathrm{mm}$ of $\mathrm{Hg}$ pressure. The percentage composition of nitrogen in the compound is ______. (Round off to the Nearest Integer). [Given : Aqueous tension at $287K=14\mathrm{mm}$ of $\mathrm{Hg}$]
The diazonium salt of which of the following compounds will form a coloured dye on reaction with $\beta$-Naphthol in $\mathrm{NaOH}?$
The number of sigma bonds in  is _______.
When $0.15g$ of an organic compound was analyzed using Carius method for estimation of bromine, $0.2397g$ of $\mathrm{AgBr}$ was obtained. The percentage of bromine in the organic compound is _________.(Nearest integer) [Atomic mass : Silver $=108,$ Bromine $=80$]
Consider the following chemical reaction. $\mathrm{CH}\equiv \mathrm{CH}\frac{1)\mathrm{Red}\mathrm{hot}\mathrm{Fe}\mathrm{tube},873K}{2)\mathrm{CO},\mathrm{HCl},{\mathrm{AlCl}}_{3}}>\mathrm{Product}$ The number of ${\mathrm{sp}}^{2}$ hybridized carbon atom(s) present in the product is
Assertion A : Enol form of acetone $[{\mathrm{CH}}_{3}{\mathrm{COCH}}_{3}]$ exists in $<0.1%$ quantity. However, the enol form of acetyl acetone $[{\mathrm{CH}}_{3}{\mathrm{COCH}}_{2}{\mathrm{OCCH}}_{3}]$ exists in approximately $15%$quantity. Reason R : enol form of acetyl acetone is stabilized by intramolecular hydrogen bonding, which is not possible in enol form of acetone. Choose the correct statement:
Main Products formed during a reaction of $1$-methoxy naphthalene with hydroiodic acid are:
Which of the following compound is added to the sodium extract before addition of silver nitrate for testing of halogens?
An organic compound is subjected to chlorination to get compound $A$ using $5.0g$ of chlorine. When $0.5g$ of compound $A$ is reacted with ${\mathrm{AgNO}}_{3}$ [Carius Method], the percentage of chlorine in compound $A$ is when it forms $0.3849g$ of $\mathrm{AgCl}.$ (Round off to the Nearest Integer) (Atomic masses of $\mathrm{Ag}$ and $\mathrm{Cl}$ are $107.87$ and $35.5$ respectively)
For the reaction given below :  The compound which is not formed as a product in the reaction is a :