1

### 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.
2

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

The major product of the following reaction is :

A
B
C
D

## Explanation

3

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

The major product of the following reaction is

A
B
C
D

## Explanation

4

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

The major product obtained in the following reaction is :

A
B
C
D

## Explanation

In LiAlH4, H- is the attacking species which is a strong nucleophile and performs both nucleophilc substitution and nucleophilic addition reaction. In C = C, pi bond is created by pure p orbital with side by side overlapping which create $\pi$ cloud and $\pi$ cloud creates negative charge around it. As H- is also negative charged so LiAlH4 can't reduce C = C.