Which of the following is acidic?

What product is formed when phenol reacts with $Br_2$ in $CCl_4$ at low temperature?

Identify the compound obtained in the following reaction:

The major product formed in the following reaction is:

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

Phenol reacts with $CO_2$ in the presence of sodium hydroxide followed by acidification to give a steam volatile compound $X$. The compound $X$ on treatment with acetic anhydride in the presence of a catalytic amount of $H_2SO_4$ produces $Y$. Among the following:
$(i)$ antipyretic
$(ii)$ anti-inflammatory
$(iii)$ narcotic analgesic
$(iv)$ antiplatelet
the properties shown by compound $Y$ are