Azo dye is prepared by the coupling of phenol and:

The order of stability of the conjugate base of the given acids is:
$(i)$ Phenol
(ii) $4-$Hydroxypyridine
(iii) Cyclohexanol

Suppose the following reaction:
$CH_3-CH_2-OH$ $\xrightarrow{Cl_2/NaOH} A$ $\xrightarrow{\text{Phenol}/OH^-} \text{Major Product}$
The structure of the Major Product will be:

Identify $A$ in the following reaction: $A + \text{Acetic anhydride} \xrightarrow{H^{+}} \text{Aspirin} + \text{Acetic acid}$

Phenol reacts with acetone in the presence of concentrated sulphuric acid to form a $C_{15}H_{16}O_2$ product. Which of the following compounds is this product?

When phenol is treated with bromine water,a white precipitate is obtained. Give the structure and the name of the compound formed.