Alcohols Phenols and Ethers — JEE Main PYQs

In the following reaction sequence, structures of A and B respectively will be

Arrange the following compounds in increasing order of $\mathrm{C}-\mathrm{OH}$ bond length: methanol, phenol, p-ethoxyphenol

The major product in the following reaction is

Consider the following reactions


The mass percentage of carbon in A is ____.

The increasing order of boiling points of the following compounds is:

The antifertility drug "Novestrol" can react with:

Consider the following reaction:

The product 'P' gives positive ceric ammonium nitrate test. This is because of the presence of which of these -OH group(s)?

A solution of phenol in chloroform when treated with aqueous NaOH gives compound P as a major product. The mass percentage of carbon in P is _____. (to the nearest integer) (Atomic mass: C=12; H=1; O=16)

Which of the following derivates of alcohol is unstable is an aqueous base?

When neopentyl alcohol is heated with an acid, it slowly converted into an 85:15 mixture of alkenes A and B, respectively. What are these alkenes?

The major product [B] in the following reactions is:

(see structure) $\underset{\text{ Heat }}{\overset{\mathrm{HI}}{\to }}[\mathrm{A}]$ alcohol $\underset{\Delta }{\overset{{\mathrm{H}}_2{\mathrm{SO}}_4}{\to }}[\mathrm{B}]$

The organic compound that gives following qualitative analysis is:

The increasing order of pKa values of the following compounds is

A

B

C

D

can not be prepared by :

What will be the major product when m-cresol is reacted with propargyl bromide ($\mathrm{HC}\equiv \mathrm{C}-{\mathrm{CH}}_2\mathrm{Br}$) in presence of ${\mathrm{K}}_2{\mathrm{CO}}_3$ in acetone

The major product in the following conversion is :

p -Hydroxybenzophenone upon reaction with bromine in carbon tetrachloride gives:

The products formed in the reaction of cumene with ${\mathrm{O}}_2$ followed by treatment with dil. HCl are:

Phenol reacts with methyl chloroformate in the presence of NaOH to form product A. A reacts with ${\mathrm{Br}}_2$ to form product B. $A$ and $B$ are respectively :

Phenol on treatment with ${\mathrm{CO}}_2$ in the presence of NaOH followed by acidification produces compound $X$ as the major product. $X$ on treatment with ${\left({\mathrm{CH}}_3\mathrm{CO}\right)}_2\mathrm{O}$ in the presence of catalytic amount of …

Sodium phenoxide when heated with CO₂ under pressure at 125°C yields a product which on acetylation produces C.

The major product C would be:

The most suitable reagent for the conversion of $\mathrm{R}-{\mathrm{CH}}_2-\mathrm{OH}⟶\mathrm{R}-\mathrm{CHO}$ is:

An unknown alcohol is treated with the "Lucas reagent" to determine whether the alcohol is primary, secondary or tertiary. Which alcohol reacts fastest and by what mechanism:

Arrange the following compounds in order of decreasing acidity:

Ortho-Nitrophenol is less soluble in water than $\mathrm{p}-$ and $\mathrm{m}-$ Nitrophenols because :

Which of the following reagents may be used to distinguish between phenol and benzoic acid ?

Phenol is heated with a solution of mixture of KBr and ${\mathrm{KBrO}}_3$. The major product obtained in the above reaction is

From amongst the following alcohols the one that would react fastest with conc. HCl and anhydrous ${\mathrm{ZnCl}}_2$, is

The main product of the following reaction is $\mathrm{C}{}_6\mathrm{H}{}_5\mathrm{CH}{}_2\mathrm{CH}(\mathrm{OH})\mathrm{CH}(\mathrm{CH}{}_3){}_2\stackrel{\text{conc. }\mathrm{H}{}_2\mathrm{SO}{}_4}{\to }$ ?

The major product obtained on interaction of phenol with sodium hydroxide and carbon dioxide is :

In the following sequence of reactions,

the compound 'D' is

The electrophile involved in the above reaction is

The best reagent to convert pent -3- en-2-ol into pent -3-en-2-one is

Among the following compound which can be dehydrated very easily is