NEET UG Chemistry — Organic Chemistry previous year questions with solutions.
Which one of the following enzymes contains 'Haem' as the prosthetic group?
Given below are two statements: Statement I: Propene on treatment with diborane gives an addition product with the formula $\left(\left(\mathrm{CH}_3\right)_2-\mathrm{CH}_{)_3} \mathrm{~B}\right.$. Statement II: Oxidation of $\left(\left(\mathrm{CH}_3\right)_2-\mathrm{CH}\right)_3 \mathrm{~B}$ with hydrogen peroxide in presence of NaOH gives propan-2ol. In the light of the above statements, choose the most appropriate answer from the options given below:
The reagents with which glucose does not react to give the corresponding tests/products are A. Tollen's reagent B. Schiff's reagent C. HCN D. $\mathrm{NH}_2 \mathrm{OH}$ E. $\mathrm{NaHSO}_3$ Choose the correct options from the given below:
Methyl group attached to a positively charged carbon atom stabilizes the carbocation due to
The most stable carbocation among the following is :
The correct IUPAC name of the compound 
The alkane that can be oxidized to the corresponding alcohol by $\mathrm{KMnO}_4$ as per the equation  is, when:
Match List I with List II.  Choose the correct answer from the options given below:
For the given reaction:  'P' is
The compound that will undergo $S_N 1$ reaction with the fastest rate is
Major products A and B formed in the following reaction sequence, are 
Which one of the following alcohols reacts instantaneously with Lucas reagent?
Identify the correct reagents that would bring about the following transformation. 
On complete combustion, 0.3 g of an organic compound gave 0.2 g of $\mathrm{CO}_2$ and 0.1 g of $\mathrm{H}_2 \mathrm{O}$. The percentage composition of carbon and hydrogen in the compound, respectively is:
Identify the major product C formed in the following reaction sequence: 
Select the incorrect reaction among the following:
Given below are two statements : Statement I: Glycogen is similar to amylose in its structure. Statement II : Glycogen is| found in yeast and fungi also. In the light of the above statements, choose the correct answer from the options given below :
Given below are two statements: Statement I : The boiling point of three isomeric pentanes follows the order n-pentane $\gt$ isopentane $\gt$ neopentane Statement II : When branching increases, the molecule attains a shape of sphere. This results in smaller surface area for contact, due to which the intermolecular forces between the spherical molecules are weak, thereby lowering the boiling point. In the light of the above statements, choose the most appropriate answer from the options given below:
The major product C in the below mentioned reaction is: $\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{CH}_2 \mathrm{Br} \xrightarrow[\Delta]{\text { alc. } \mathrm{KOH}} \mathrm{A} \xrightarrow{\mathrm{HBr}} \mathrm{B} \xrightarrow[\Delta]{\text { aq. } \mathrm{KOH}} \mathrm{C}$
The compound that does not undergo Friedel-Crafts alkylation reaction but gives a positive carbylamine test is :
The major product $X$ formed in the following reaction sequence is: 
The major product D formed in the following reaction sequence is: 
On heating, some solid substances change from solid to vapour state without passing through liquid state. The technique used for the purification of such solid substances based on the above principle is known as
Given below are two statements: Statement I : Aniline does not undergo Friedel-Crafts alkylation reaction. Statement II : Aniline cannot be prepared through Gabriel synthesis. In the light of the above statements, choose the correct answer from the options given below: