The reaction of ${\mathrm{C}}_6{\mathrm{H}}_5\mathrm{CH}={\mathrm{CHCH}}_3$​ with $\mathrm{HBr}$ produces :

The major product of the following reaction is:

The major product in the following conversion is

The major product of the following reaction is:

In the given reaction, the product $\mathrm{P}$ is

What is the major product expected from the following reaction?



Where D is an isotope of hydrogen.

The major product of the following reaction is:

The correct name of the following polymer is: