Preparation Method of Aromatic Hydrocarbons

Identify the number of reactions that can give benzene as the major product.

Benzene diazonium chloride on treatment with ${\mathrm{H}}_3{\mathrm{PO}}_2$ in the presence of cuprous ions gives

Which of the following compound reacts with heated zinc dust to form benzene?

Phenol reacts with heated zinc dust to form

Write the deprotonation reaction of arenium ion.

The product C in the above reaction is 

$3{\mathrm{CH}}_3-\mathrm{C}\equiv \mathrm{CH}\underset{\mathrm{Cu} \mathrm{tube}}{\overset{\mathrm{Red} \mathrm{hot}}{\to }}$?

Reagent $\mathrm{B}$ can be :-

Difference between the molar mass of $\mathrm{A}$ and $\mathrm{B}$ gas?

Select the correct statement regarding the final product.

Heating a mixture of sodium benzoate and soda-lime gives

Which of the following compound does not de-colourise the Baeyer's reagent?

The number of primary carbon atoms in the product formed by the following reaction is ---------.

$3{\mathrm{CH}}_3-\mathrm{C}\equiv \mathrm{C}-{\mathrm{CH}}_3\underset{873 \mathrm{K}}{\overset{\mathrm{Red} \mathrm{hot} \mathrm{iron} \mathrm{tube}}{\to }}$

How many products are possible for the following reaction?

$\mathrm{n}-\mathrm{Octane}\underset{773\mathrm{K},10-20\mathrm{atm}}{\overset{{\mathrm{V}}_2{\mathrm{O}}_5}{\to }}$

Reaction between phenyl magnesium bromide and methanol produces

Product $\left(\mathrm{X}\right)$ is

In the following sequence of reactions the maximum number of atoms present in molecule $\text{C}$ in ${\text{sp}}^{\text{3}}$ hybridised state is
$\text{A}\stackrel{\text{Red}\text{hot}\text{Cu}\text{tube}}{\to }\text{B}\underset{{\text{AlCl}}_{\text{3}}}{\overset{{\text{CH}}_{\text{3}}\text{Cl}\text{(1}\text{eq}\text{.)}}{\to }}\text{C}$
($\text{A}$ is a lowest molecular weight alkyne)

Consider the following reaction,

Identify the product $\mathrm{B}$.

When acetylene is passed through a red-hot iron tube, a compound $\mathrm{X}$ is formed. Which one of the following reactions will yield $\mathrm{X}$ as the major product?