Based on the provided energy profile diagram,transition state $2$ $(T.S. 2)$ is structurally most likely similar to which of the following?

The correct order of the rate of $ESR$ (Electrophilic Substitution Reaction) in the given compounds is:

Ionic reactions with organic compounds proceed through:
$(A)$ Homolytic bond cleavage
$(B)$ Heterolytic bond cleavage
$(C)$ Free radical formation
$(D)$ Primary free radical
$(E)$ Secondary free radical
Choose the correct answer from the options given below:

In the reaction,the major product formed is:

Identify the product of the above rearrangement reaction.

In the reaction given below,the total number of atoms having $sp^2$ hybridization in the major product $P$ is. . . . .