Which of the following compounds will give methyl orange by the reaction with diazonium salt of sodium $\mathrm{p}$-amino benzene sulphonate?

The final product $\mathrm{R}$ is

Consider the following reaction:

The product $\mathrm{\text{'}}{\mathrm{X}}^{\mathrm{\text{'}}}$ is used:

The major product of the following reaction is

In a set of reactions $\mathrm{p}-$ nitrotoluene yielded a product $\mathrm{E}$



Product $\mathrm{E}$ would be:

The reaction,

 is called