1

### JEE Main 2019 (Online) 10th January Evening Slot

The major product obtained in the following reaction is :

A
B
C
D

## Explanation

This is an intramoleculer aldol condensation.
2

### JEE Main 2019 (Online) 10th January Evening Slot

The major product of the following reaction is :

A
B
C
D

## Explanation

NaBH4 reduces both ketone into alcohol and imine into 2o amine but it can't reduce alkene as the reacting species of NaBH4 is H- which can't attack as a nucleophile to alkene as alkene itself is a nucleophile.
3

### JEE Main 2019 (Online) 10th January Evening Slot

What will be the major product in the following mononitration reaction ?

A
B
C
D

## Explanation

Here in the compound $\pi$ bond of C = O bond will be at resonance with benzene ring with -M effect. But lone pair of N atom is electron donating group which will make the left benzene ring more active by +M effect than right benzene ring and hence electrophilic substitution reaction will be taken place at ortho- or para- position of left benzene ring. As ortho-product formed is sterically hindered and hence para-product will be major product.
4

### JEE Main 2019 (Online) 11th January Morning Slot

The major product of the following reaction is :

A
B
C
D