The phthalein test is a characteristic test for which of the following?

The major product of the following reaction is:

The reaction sequence is as follows:
$Catechol \xrightarrow{(i) CHCl_3 + KOH}{(ii) CH_2I_2 + NaOH} [X]$
Here $[X]$ is:

An organic compound with the molecular formula $C_6H_6O$ dissolves in $NaOH$, gives a characteristic colour with neutral $FeCl_3$ and on treatment with bromine water gives a tri-bromo derivative. Which is that compound among the following?

In the given conversion,the compound $A$ is:

Identify the reaction shown below:
$C_6H_5OH + CH_2O \xrightarrow{\text{acid or base}} \text{o-hydroxybenzyl alcohol} + \text{p-hydroxybenzyl alcohol}$