Isopropyl alcohol heated at $300\,^{\circ}C$ with a copper catalyst forms:

Identify an aromatic compound $A \left( C_7H_8O \right)$ which gives the following tests with the given reagents:

What are $X$ and $Y$ in the following reactions?
$R-CH_2OH \xrightarrow{Cu/573 \ K} X$
$(CH_3)_3C-OH \xrightarrow{Cu/573 \ K} Y$

Identify $Z$ in the following reaction:
$CH_3CH_2OH$ $\xrightarrow{PBr_3} X$ $\xrightarrow{alc. KOH} Y$ $\xrightarrow[{(ii) H_2O, \text{heat}}]{{(i) H_2SO_4, \text{RT}}} Z$

Dehydration of $2-$butanol yields:

The product $(B)$ of the reaction sequence is:
$Cl-C_6H_4-CH_2Br$ $\xrightarrow{Mg, Et_2O} A$ $\xrightarrow[2. H_3O^+]{1. CH_3CHO} B$