Name the catalyst used in the commercial preparation of phenol.

The cumene process is the most important commercial method for the manufacture of phenol. Cumene is:

What is $A$ in the following reaction?

Isopropylbenzene on air oxidation in the presence of dilute acid gives

In the following reaction,
$X \xrightarrow[(ii) \text{ aq. acid}]{(i) \text{ O}_2, \text{ catalyst, heat}} \text{Phenol} + Y (C_6H_{10}O)$
$X$ and $Y$ respectively,are $......$

Cumene on air oxidation in the presence of cobalt naphthenate forms: