The following reaction is known as:
$Phenol \xrightarrow[H^{+}]{CHCl_3 / NaOH} \text{Salicylaldehyde}$

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 does not give a bicarbonate test with $NaHCO_3$?

Assertion : Resorcinol turns $FeCl_3$ solution purple.
Reason : Resorcinol has a phenolic group.

Phenol reacts with $CHCl_3$ and $NaOH$ (at $340 \ K$) to give

Which compound has the maximum value of $pK_a$ among the following?