When phenol is heated with zinc dust,it forms product $X$. What is the product $X$?

The compound that does $NOT$ liberate $CO_2$ on treatment with aqueous sodium bicarbonate solution is:

What amount of bromine will be required to convert $2 \ g$ of phenol into $2, 4, 6-$tribromophenol (in $g$)?

Phenol reacts with bromine in carbon disulphide $(CS_2)$ at low temperature to give:

Which of the following is the $IUPAC$ name of hydroquinone?

The major product of the following reaction sequence is:
Aniline $\xrightarrow[(i) NaNO_2, HCl, 273-278K]{(ii) H_2O, warm} \text{Product}$ $\xrightarrow[(iv) NaOH]{(iii) Br_2, (excess)} \text{Product}$ $\xrightarrow{(v) CH_3I} \text{Final Product}$