The major product of the following reaction is:

An organic compound $A$ with empirical formula $C_6H_6O$ gives a sooty flame on burning. Its reaction with bromine solution in a low polarity solvent results in a high yield of $B$. $B$ is:

$X + Y \xrightarrow{H^{+}} \text{Aspirin} + CH_3COOH$. Identify $X$ and $Y$ from the following:

The electrophile involved in the below reaction is:

The electrophile involved in the reaction shown below is:
$C_6H_5OH + CHCl_3 + NaOH \rightarrow C_6H_4(ONa)CHO$

What is $Y$ in the given reaction sequence?