Hydrocarbons — JEE Main PYQs

In the following series of reactions identify the major products A & B respectively.

Bromobenzene

Match List -I with List II:

In the above chemical reaction sequence "A" and " B " respectively are :

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 …

9.3 g of pure aniline is treated with bromine water at room temperature to give a white precipitate of the product 'P'. The mass of product 'P' obtained is 26.4 g. The percentage yield is ____ %.

Identify A and B in the given chemical reaction sequence :-

The major products from the following reaction sequence are product A and product B.

The total sum of π electrons in product A and product B are ______ (nearest integer)

The major products formed:

A and B respectively are:

The ratio of number of oxygen atoms to bromine atoms in the product Q is ______ $\times 10^{-1}$.

Major product B of the following reaction has ______ $\pi$-bond.

What is the structure of C ?

Identify major product " X " formed in the following reaction :

Identify the product A and product B in the following set of reactions.

The incorrect statement regarding ethyne is

Number of compounds from the following which cannot undergo Friedel-Crafts reactions is : $\_\_\_\_$
toluene, nitrobenzene, xylene, cumene, aniline, chlorobenzene, m-nitroaniline, m-dinitrobenzene

Cyclohexene is ______ type of an organic compound.

3-Methylhex-2-ene on reaction with HBr in presence of peroxide forms an addition product (A). The number of possible stereoisomers for 'A' is ____.

Among the following, total number of meta directing functional groups is (Integer based)
$-{\mathrm{OCH}}_3,-{\mathrm{NO}}_2,-\mathrm{CN},-{\mathrm{CH}}_3-{\mathrm{NHCOCH}}_3$,
$-\mathrm{COR},-\mathrm{OH},-\mathrm{COOH},-\mathrm{Cl}$

The set of meta directing functional groups from the following sets is:

In the given reactions identify A and B .

${\mathrm{CH}}_3-\mathrm{C}\equiv \mathrm{C}-{\mathrm{CH}}_3+{\mathrm{H}}_2\stackrel{\mathrm{Na}/\text{ Liquid }{\mathrm{NH}}_3}{\to }$ "B"

Identify A and B in the following sequence of reaction

Which of the following compound will most easily be attacked by an electrophile?

Given below are two statements:

Statement (I): The ${\mathrm{NH}}_2$ group in Aniline is ortho and para directing and a powerful activating group.

Statement (II): Aniline does not undergo Friedel-Craft's reaction (alkylation and acylation).

In the light of the above statements …

Total number of deactivating groups in aromatic electrophilic substitution reaction among the following is

The final product A, formed in the following reaction sequence is:

The arenium ion which is not involved in the bromination of Aniline is .

Identify product A and product B :

Consider the given reaction. The total number of oxygen atoms present per molecule of the product (P) is ____.

Number of alkanes obtained on electrolysis of a mixture of ${\mathrm{CH}}_3\mathrm{COONa}$ and ${\mathrm{C}}_2{\mathrm{H}}_5\mathrm{COONa}$ is ______.

Identify A and B in the following reaction sequence.

Identify major product ' P ' formed in the following reaction.

The correct order of reactivity in electrophilic substitution reaction of the following compounds is :

Number of isomeric products formed by monochlorination of 2-methylbutane in presence of sunlight is ____.

Product A and B formed in the following set of reactions are:

Number of bromo derivatives obtained on treating ethane with excess of ${\mathrm{Br}}_2$, in diffused sunlight is...

The major product 'P' formed in the given reaction is:

Molar mass of the hydrocarbon (X) which on ozonolysis consumes one mole of ${\mathrm{O}}_3$ per mole of (X) and gives one mole each of ethanal and propanone is ______ ${\mathrm{g}\mathrm{mol}}^{-1}$ (Molar mass of C: $12{\mathrm{g}\mathrm{mol}}^{-1}$, H: $1{\mathrm{g}\mathrm{mol}}^{-1}$)

Arrange the following compounds in increasing order of rate of aromatic electrophilic substitution reaction
(a) (see structure)
(b) (see structure)
(c) (see structure)
(d) (see structure)

2-hexene $\underset{\text{(ii) }{\mathrm{H}}_2\mathrm{O}}{\overset{\text{(i) }{\mathrm{O}}_3}{\to }}$ Products

The two products formed in above reaction are -

In the following reaction ' X ' is ${\mathrm{CH}}_3{\left({\mathrm{CH}}_2\right)}_4{\mathrm{CH}}_3\underset{\text{ HCl, }\Delta }{\overset{\text{ Anhy. }{\mathrm{AlCl}}_3}{\to }}{}_{\text{major product}}\mathrm{X}$

The product formed in the following multistep reaction is:

Decreasing order of reactivity towards electrophilic substitution for the following compounds is :

The major product formed in the Friedel-Craft acylation of chlorobenzene is .

But-2-yne is reacted separately with one mole of Hydrogen as shown below: …

In the following given reaction ' A ' is

Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R. Assertion A: Benzene is more stable than hypothetical cyclohexatriene.
Reason R : The delocalized $\pi$ electron cloud is attracted more strongly by nuclei of carbon atoms. In th …

Find out the major products from the following reactions.

Maximum number of isomeric monochloro derivatives which can be obtained from 2,2,5,5tetramethylhexane by chlorination is ______

17 mg of a hydrocarbon (M.F. ${\mathrm{C}}_{10}{\mathrm{H}}_{16}$) takes up 8.40 mL of the ${\mathrm{H}}_2$ gas measured at $0^{\circ }\mathrm{C}$ and 760 mm of Hg. Ozonolysis of the same hydrocarbon yields

The number of double bond/s present in the hydrocarbon is ______.

The major products 'A' and 'B', respectively, are