JEE Main Chemistry — Organic Chemistry previous year questions with solutions.
Identify the product formed ($A$ and $E$) 
Choose the correct colour of the product for the following reaction. 
The one that does not stabilize ${2}^{\circ }$ and ${3}^{\circ }$ structures of proteins is
Match List-I with List-II. <table class="pyq-table"><tbody><tr><td></td><td>List-I Natural Amino acid</td><td></td><td>List-II One Letter Code</td></tr><tr><td>(A)</td><td>Arginine</td><td>(I)</td><td>$D$</td></tr><tr><td>(B)</td><td>Aspartic acid</td><td>(II)</td><td>$N$</td></tr><tr><td>(C)</td><td>Asparagine</td><td>(III)</td><td>$A$</td></tr><tr><td>(D)</td><td>Alanine</td><td>(IV)</td><td>$R$</td></tr></tbody></table>Choose the correct answer from the options given below:
Following tetrapeptide can be represented as  ($F,L,D,Y,I,Q,P$ are one letter codes for amino acids)
Number of cyclic tripeptides formed with $2$ amino acids $A$ and $B$ is:
Consider the following reaction $\mathrm{Propanal}+\mathrm{Methanal}=\rightarrow _{(\mathrm{ii})\Delta (\mathrm{iii})\mathrm{NaCN} (\mathrm{iv}){H}_{3}{O}^{+}}^{(i)\mathrm{dil}.\mathrm{NaOH}}P\underset{({C}_{5}{H}_{8}{O}_{3})}{\mathrm{roduct}B}$ The correct statement for product $B$ is. It is
Major product $'P'$ formed in the following reaction is  Major product
In the cumene to phenol preparation in presence of air, the intermediate is
The major product for the following reaction is : 
Match List-I with List-II. 1-Bromopropane is reacted with reagents in List-I to give product in List-II <table class="pyq-table"><tbody><tr><td></td><td>List-I Reagent</td><td></td><td>List-II Product</td></tr><tr><td>A.</td><td>KOH (alc)</td><td>I.</td><td>Nitrile</td></tr><tr><td>B.</td><td>KCN (alc)</td><td>II.</td><td>Ester</td></tr><tr><td>C.</td><td>AgNO$_{2}$</td><td>III.</td><td>Alkene</td></tr><tr><td>D</td><td>H$_{3}$CCOOAg</td><td>IV.</td><td>Nitroalkane</td></tr></tbody></table>Choose the correct answer from the options given below
In the reaction given below  $'B'$ is:
Compound $(X)$ undergoes following sequence of reactions to give the Lactone $(Y)$. 
The major product '$P$' for the following sequence of reactions is: 
But-$2$-yne is reacted separately with one mole of Hydrogen as shown below: $\underset{¯}{B}\leftarrow _{\mathrm{liq}{\mathrm{NH}}_{3}}^{\mathrm{Na}}{\mathrm{CH}}_{3}-\underset{+{H}_{2}}{C\equiv }C-{\mathrm{CH}}_{3}\rightarrow _{\Delta }^{\mathrm{Pd}/C}\underset{¯}{A}$ Identify the incorrect statements from the options given below: A. A is more soluble than $B$. B. The boiling point & melting point of $A$are higher and lower than $B$ respectively. C. A is more polar than $B$ because dipole moment of $A$ is zero. D. ${\mathrm{Br}}_{2}$ adds easily to $B$ than $A$.
 ‘A’ and ‘B’ in the above reactions are:
The correct order of ${\mathrm{pK}}_{a}$ values for the following compounds is: 
Isomeric amines with molecular formula ${C}_{8}{H}_{11}N$ give the following tests Isomer$(P)\Rightarrow$ Can be prepared by Gabriel phthalimide synthesis Isomer$(Q)\Rightarrow$ Reacts with Hinsberg’s reagent to give solid insoluble in $\mathrm{NaOH}$ Isomer$(R)\Rightarrow$ Reacts with $\mathrm{HONO}$ followed by $\beta$-naphthol in $\mathrm{NaOH}$ to give red dye. Isomers$(P),(Q)$ and $(R)$ respectively are
Which of the following conformations will be the most stable?
When a hydrocarbon $A$ undergoes combustion in the presence of air, it requires $9.5$ equivalents of oxygen and produces $3$ equivalents of water. What is the molecular formula of $A$?
In an oligopeptide named Alanylglycylphenyl alanyl isoleucine, the number of ${\mathrm{sp}}^{2}$ hybridised carbons is _____.
 $'A'$ is
In a reaction  reagents ‘$X$’ and ‘$Y$’ respectively are:
Match List I and List II <table class="pyq-table"><tbody><tr><td>List I</td><td>List II</td></tr><tr><td>Test</td><td>Functional group / Class of Compound</td></tr><tr><td>(A) Molisch's Test</td><td>(I)Peptide</td></tr><tr><td>(B) Biuret Test</td><td>(II)Carbohydrate</td></tr><tr><td>(C) Carbylamine Test</td><td>(III) Primary amine</td></tr><tr><td>(D) Schiff's Test</td><td>(IV) Aldehyde</td></tr></tbody></table>Choose the correct answer from the options given below: