What happens when phenol react with chromyl chloride.

In the following reaction, the product(s) formed is/are:

Match the following $\mathrm{pKa}$ values.

$\mathrm{Chlorobenzene}\stackrel{\mathrm{Reaction}-\left(\mathrm{X}\right)}{\to }\mathrm{Phenol}\stackrel{\mathrm{Reaction}-\left(\mathrm{Y}\right)}{\to }\mathrm{Salicylaldehyde}$.

The reactions(s) ${}^{\text{'}}\mathrm{X}^{\text{'}}$ and${}^{\text{'}}\mathrm{Y}^{\text{'}}$ respectively are

Assertion$\left(\mathrm{A}\right):-\mathrm{OH}$ group of phenol is ortho, para directing in electrophilic substitutions

Reason $\left(\mathrm{R}\right):-\mathrm{OH}$ group stabilises the arenium ion formed by the ortho, para attack of the electrophile

The correct answer is

The major product $\left(\mathrm{P}\right)$ formed in the following reaction is

The major product(s) of the following reaction is/are:

The functional group which is formed when Phenol is made to react with Chloroform in the presence of dilute Sodium hydroxide

The increasing order of the $pKa$ values of the following compounds is: