The reaction shown in the figure is known as:

Phenol is more acidic than:

Arrange the following compounds in the increasing order of their acidic strength :
$i$. $m-$nitrophenol
$ii$. $m-$cresol
$iii$. phenol
$iv$. $m-$chlorophenol

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

What will be the major product when $m$-cresol is reacted with propargyl bromide $(HC \equiv C-CH_2Br)$ in the presence of $K_2CO_3$ in acetone?

The reaction is given as: $X \xrightarrow{Y} \text{Benzoquinone}$. Identify $X$ and $Y$ in the above reaction.