Organic Chemistry PYQ — Page 16
JEE Main Chemistry — Organic Chemistry previous year questions with solutions.
All Organic Chemistry Questions (1783)
On a thin layer chromatographic plate, an organic compound moved by $3.5\mathrm{cm}$, while the solvent moved by $5\mathrm{cm}$. The retardation factor of the organic compound is _____________$\times {10}^{-1}$
Which one of the following reactions is NOT possible?
Lassaigne's test is used for detection of:
In the given reactions identify $A$ and $B.$ 
 Consider the given reaction. The total number of oxygen atoms present per molecule of the product $(P)$ is _________.
Which of the following compound can give positive iodoform test when treated with aqueous \(\mathrm{KOH}\) solution followed by potassium hypoiodite.
Major product of the following reaction is 
Common name of Benzene - 1, 2 - diol is -
Number of \(\sigma\) and \(\pi\) bonds present in ethylene molecule is respectively :
In the following sequence of reaction, the major products \(B\) and \(C\) respectively are : 
Total number of deactivating groups in aromatic electrophilic substitution reaction among the following is 
The set of meta directing functional groups from the following sets is:
Which among the following is incorrect statement?
Total number of compounds with Chiral carbon atoms from following is  ${\mathrm{CH}}_{3}-{\mathrm{CH}}_{2}-\mathrm{CH}({\mathrm{NO}}_{2})-\mathrm{COOH}$ ${\mathrm{CH}}_{3}-\mathrm{CH}(I)-{\mathrm{CH}}_{2}-{\mathrm{NO}}_{2}$ ${\mathrm{CH}}_{3}-{\mathrm{CH}}_{2}-\mathrm{CHBr}-{\mathrm{CH}}_{2}-{\mathrm{CH}}_{3}$ ${\mathrm{CH}}_{3}-{\mathrm{CH}}_{2}-\mathrm{CH}(\mathrm{OH})-{\mathrm{CH}}_{2}\mathrm{OH}$ 
Which of the following compounds will show optical isomerism?
Given below are two statements: Statement I : Nitration of benzene involves the following step -  Statement II : Use of Lewis base promotes the electrophilic substitution of benzene. In the light of the above statements, choose the most appropriate answer from the options given below :
In qualitative test for identification of presence of phosphorous, the compound is heated with an oxidising agent. Which is further treated with nitric acid and ammonium molybdate respectively. The yellow coloured precipitate obtained is :
Match List - I with List - II.  Choose the correct answer from the options given below :
Which of the following has highly acidic hydrogen?
Total number of isomeric compounds (including stereoisomers) formed by monochlorination of $2$-methylbutane is ______.
$3-$Methylhex-2-ene on reaction with $\mathrm{HBr}$ in presence of peroxide forms an addition product (A). The number of possible stereoisomers for ' $A$ ' is ________.
Chromatographic technique/s based on the principle of differential adsorption is/are A. Column chromatography B. Thin layer chromatography C. Paper chromatography Choose the most appropriate answer from the options given below:
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 :
Total number of aromatic compounds among the following compounds is ______. 