JEE Main Chemistry — Organic Chemistry previous year questions with solutions.
The final product $A$, formed in the following multistep reaction sequence is: 
Following is a confirmatory test for aromatic primary amines. Identify reagent (A) and (B) 
The incorrect statement about Glucose is :
The total number of carbon atoms present in tyrosine, an amino acid, is _______
Coagulation of egg, on heating is because of :
Which of the following is the correct structure of L-Glucose?
The number of tripeptides formed by three different amino acids using each amino acid once is _______.
Match List I with List II <table class="pyq-table"><tbody><tr><td></td><td>List-I</td><td></td><td>List-II</td></tr><tr><td>A.</td><td>Glucose/${\mathrm{NaHCO}}_{3}/\Delta$</td><td>I.</td><td>Gluconic acid</td></tr><tr><td>B.</td><td>Glucose/${\mathrm{HNO}}_{3}$</td><td>II.</td><td>No reaction</td></tr><tr><td>C.</td><td>Glucose/$\mathrm{HI}/\Delta$</td><td>III.</td><td>$n$-hexane</td></tr><tr><td>D.</td><td>Glucose/Bromine water</td><td>IV.</td><td>Saccharic acid</td></tr></tbody></table>Choose the correct answer from the options given below:
Two nucleotides are joined together by a linkage known as :
Ionic reactions with organic compounds proceed through: (A) Homolytic bond cleavage (B) Heterolytic bond cleavage (C) Free radical formation (D) Primary free radical (E) Secondary free radical Choose the correct answer from the options given below:
The major product(P) in the following reaction is 
\(\mathrm{X} \mathrm{g}\) of ethanamine was subjected to reaction with \(\mathrm{NaNO}_2 / \mathrm{HCl}\) followed by hydrolysis to liberate \(\mathrm{N}_2\) and \(\mathrm{HCl}\). The \(\mathrm{HCl}\) generated was completely neutralised by 0.2 moles of \(\mathrm{NaOH} . X\) is ______ g.
Which of the following are aromatic? 
 What is the structure of C
Which of the following statements are correct? A. Glycerol is purified by vacuum distillation because it decomposes at its normal boiling point. B. Aniline can be purified by steam distillation as aniline is miscible in water. C. Ethanol can be separated from ethanol water mixture by azeotropic distillation because it forms azeotrope. D. An organic compound is pure, if mixed M.P. is remained same. Choose the most appropriate answer from the options given below :
Identify compound \((\mathrm{Z})\) in the following reaction sequence. 
The major products from the following reaction sequence are product \(A\) and product B.  The total sum of \(\pi\) electrons in product \(A\) and product \(B\) are _______ (nearest integer)
Two moles of benzaldehyde and one mole of acetone under alkaline conditions using aqueous \(\mathrm{NaOH}\) after heating gives \(x\) as the major product. The number of \(\pi\) bonds in the product \(x\) is _______
The ascending order of acidity of $–\mathrm{OH}$ group in the following compounds is : (A) $\mathrm{Bu}–\mathrm{OH}$  Choose the correct answer from the options given below :
 The incorrect statements regarding enzymes are : (A) Enzymes are biocatalysts. (B) Enzymes are non-specific and can catalyse different kinds of reactions. (C) Most Enzymes are globular proteins. (D) Enzyme - oxidase catalyses the hydrolysis of maltose into glucose. Choose the correct answer from the option given below :
The molecular formula of second homologue in the homologous series of mono carboxylic acids is _________.
Appearance of blood red colour, on treatment of the sodium fusion extract of an organic compound with ${\mathrm{FeSO}}_{4}$ in presence of concentrated ${H}_{2}{\mathrm{SO}}_{4}$ indicates the presence of element/s
Number of amine compounds from the following giving solids which are soluble in \(\mathrm{NaOH}\) upon reaction with Hinsberg's reagent is _______ 
 Consider the above chemical reaction. Product " \(\mathrm{A}\) " is :