Chemical Reactions of Diazonium Salts

The product formed, when benzene diazonium fluoroborate is heated with aqueous sodium nitrite solution in the presence of copper is

Identify the compound $\left[\mathrm{X}\right]$ in the following reaction.

By which reaction, you will obtain phenol from diazonium salts?

Fluorination of an aromatic ring is easily accomplished by treating a diazonium salt with $\mathrm{H}\mathrm{B}{\mathrm{F}}_4$. Which of the following conditions is correct about this reaction?

Benzene diazonium chloride on reaction with aniline in the presence of dilute hydrochloric acid gives:

Identify the Product $\mathrm{E}$ of the above reaction from the following.

Products A and B formed in the following reactions are respectively:

, (major product) $\mathrm{X}$ will be:

Which of the following reaction will not occur?

The yellow dye $\mathrm{A}$ in the above reaction is

A yellow coloured dye is obtained by the reaction of $\mathrm{X}$ with benzene diazonium chloride. The reactant $\mathrm{X}$ is

Benzene diazonium chloride on hydrolysis gives

In the reaction,

 $\mathrm{A}$ will be:

 here $\mathrm{X}$ is :-

$\mathrm{Ar}-{\mathrm{N}}_2\mathrm{X}\stackrel{}{\stackrel{{\mathrm{HBF}}_4}{\to } \mathrm{Ar}-{\mathrm{N}}_2} {{\mathrm{BF}}^{-}}_4\stackrel{∆}{\to }\mathrm{Ar}-\mathrm{F}+{\mathrm{BF}}_3+{\mathrm{N}}_2\uparrow$

Which of the following reactions shows this kind of reaction ?

Which of the following reactions is used to prepare aryl fluorides from diazonium salts and fluoroboic acid ?

A dye obtained by the reaction of reactant $\mathrm{X}$ with benzene diazonium chloride. The reactant $\mathrm{X}$ is