$A$ compound '$X$' when treated with phthalic anhydride in the presence of concentrated $H_2SO_4$ yields '$Y$'. '$Y$' is used as an acid/base indicator. '$X$' and '$Y$' are respectively:

How many $\sigma$ (sigma) and $\pi$ (pi) bonds are present respectively in the final product obtained by the Reimer-Tiemann reaction of phenol?

The major product $(B)$ of this reaction is:

Assertion: Phenol undergoes Kolbe reaction,ethanol does not.
Reason: Phenoxide ion is more basic than ethoxide ion.

The correct statement$(s)$ about the following reaction sequence is(are):
Cumene $(C_9H_{12})$ $\xrightarrow[ii) H_3O^+]{i) O_2}$ $P$ $\xrightarrow{CHCl_3/NaOH}$ $Q$ (major) + $R$ (minor)
$Q$ $\xrightarrow[PhCH_2Br]{NaOH}$ $S$
$(A)$ $R$ is steam volatile
$(B)$ $Q$ gives dark violet coloration with $1 \%$ aqueous $FeCl_3$ solution
$(C)$ $S$ gives yellow precipitate with $2, 4-dinitrophenylhydrazine$
$(D)$ $S$ gives dark violet coloration with $1 \%$ aqueous $FeCl_3$ solution

Sodium phenoxide when heated with $CO_2$ under pressure at $125\,^{\circ}C$ yields a product which on acetylation produces $C$. The major product $C$ would be