1
MCQ (Single Correct Answer)

JEE Main 2019 (Online) 10th January Evening Slot

The major product of the following reaction

A
B
C
D

Explanation

2
MCQ (Single Correct Answer)

JEE Main 2019 (Online) 11th January Morning Slot

The major product of the following reaction is :

A
B
C
D

Explanation

Here –SO3H will be replaced by Br this is called ipso effect
3
MCQ (Single Correct Answer)

JEE Main 2019 (Online) 11th January Evening Slot

The major product of the following reaction is :

A
B
C
D

Explanation

First Markonikov’s addition on alkene followed by intramolecular Friedel-Craft alkylation takes place.
4
MCQ (Single Correct Answer)

JEE Main 2019 (Online) 12th January Evening Slot

The major product in the following conversion is –

A
B
C
D

Explanation


As here HBr is present in excess, so HBr will react to alkene and ether part sinultaneously.

According to Markovnikov rule. Carbocation close to benzene ring is more stable.

In the given reagent, carbocation is $$ \to $$


So in HBr, Br$$-$$ adds to the carbocation.

And in the ether part because of lone pair of oxygen, it will take part in resonance a double bond will create between O atom and benzene ring. So, this bond will be stronger. That is why CH3 $$-$$ O bond will break.

Questions Asked from Alcohols, Phenols and Ethers

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