Consider the following reactions:
$Ethylbenzene \xrightarrow[(ii) H_3O^{+}]{(i) KMnO_4-KOH/\Delta} Y$
$Propylbenzene \xrightarrow[(ii) H_3O^{+}]{(i) KMnO_4-KOH/\Delta} Z$
What are the structures of $Y$ and $Z$?

$A$ compound $X$ formed after heating coke with lime reacts with water to give $Y$,which on passing over red-hot iron at $873 \ K$ produces $Z$. The compound $Z$ is

Benzene reacts with $CH_3Cl$ in the presence of anhydrous $AlCl_3$ to form

Aromatic hydrocarbons mostly exhibit .......

Hexane $\xrightarrow[\substack{773 \ K \\ 10-20 \ atm}]{Cr_2O_3} X$ $\xrightarrow[\text{Anhydrous } AlCl_3]{CH_3COCl} Y$. $Y$ in the above sequence of reactions is

The number of chlorine atoms present in the organic products $X$ and $Y$ of the following reactions,respectively,are:
$\text{Benzene} + 6Cl_2 \xrightarrow[\text{dark, cold}]{\text{Anhydr. } AlCl_3} X$
$\text{Benzene} + 3Cl_2 \xrightarrow{UV, 500 \text{ K}} Y$