Explain the oxo process.

${\mathrm{C}}_6{\mathrm{H}}_6+{\mathrm{CCl}}_4\stackrel{{\mathrm{AlCl}}_3}{⟶}\mathrm{X}\stackrel{{\mathrm{H}}_2\mathrm{O}}{⟶}\mathrm{Z}$

The product $\mathrm{Z}$ is

In the following reaction, $\mathrm{P}$ gives two products $\mathrm{Q}$ and $\mathrm{R}$ each in $40\%$ yield.

If the reaction is carried out with $420 \mathrm{mg}$ of $\mathrm{P}$, the reaction yields $108.8 \mathrm{mg}$ of $\mathrm{Q}$. The amount of $\mathrm{R}$ produced in the reaction is closest to

What is the compound $\mathrm{C}$ in the following reaction? 

Phenol $\stackrel{\mathrm{NaOH}}{⟶}\mathrm{A}$  $\frac{\mathrm{CO},410 \mathrm{K}}{4-7 \mathrm{atm}}\mathrm{B}$  $\stackrel{\mathrm{HCl}}{⟶}\mathrm{C}$

Consider the following reactions:

'A' is

The major product obtained from the following reaction is :

${\mathrm{CH}}_3{\mathrm{CH}}_2\mathrm{CH}={\mathrm{CH}}_2\underset{\mathrm{Rh} \mathrm{catalyst}}{\overset{{\mathrm{H}}_2/\mathrm{CO}}{\to }}$

What are the products formed in the reaction given below:

$\mathrm{Ph}-{\mathrm{CH}}_2-\mathrm{CH}=\mathrm{CH}-{\mathrm{CH}}_3\underset{{}^{\mathrm{Zn} \mathrm{dust}+{\mathrm{H}}_2\mathrm{O}}}{\overset{1){\mathrm{O}}_3}{\to }}$?

In the above reaction, the structural formula of (A), "X" and "Y" respectively are :