Two aromatic compounds having formula $C_7H_8O$ which are easily identifiable by $FeCl_3$ solution test (violet colouration) are

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

Which of the following compounds is most readily nitrated?

What is the product obtained by heating the following allylic ether of phenol?

Which of the following produces violet colour with $FeCl_3$ solution?

The major product in the following reaction is: