Which of the following is a dihydric phenol?

Identify the product in the following reaction:
Phenol + $CHCl_3 + NaOH \rightarrow \text{Product}$

What amount of bromine will be required to convert $2 \ g$ of phenol into $2, 4, 6-$tribromophenol (in $g$)? $($Given molar mass in $g \ mol^{-1}$ of $C, H, O, Br$ are $12, 1, 16, 80$ respectively$)$

The product $(A)$ in the following reaction is:

One mole of phenol reacts with bromine to form $2,4,6-$tribromophenol. $X \ mol$ of bromine is used. The value of $X$ is:

The products formed in the reaction of cumene with $O_2$ followed by treatment with dil. $HCl$ are