The reaction of phenol with chloroform in the presence of dilute sodium hydroxide introduces which one of the following functional groups?

Consider the following reaction sequence:
$\text{Compound } (x)$ $\xrightarrow[(ii) H_3O^{+}]{(i) CO_2, NaOH, 120^{\circ}C, \text{high pressure}} \text{Compound } (y) \text{ (Major Product)}$
$[76.6\% C, 6.38\% H, \text{vapour density } 47]$
Compound $(y)$ develops a characteristic color with neutral $FeCl_3$ solution.
Identify the $INCORRECT$ statement from the following for the above sequence.

Which compound has the highest value of $pK_{a}$?

The major product of the following reaction is:

What will be the product $X$ in the following reaction?

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