Ethers are practically inert towards which of the following?

Match the products of the reaction with anisole in Column-$I$ with the reagents in Column-$II$. Find the correct reagent for the product in Column-$I$ from Column-$II$.

Column-$I$ (Product)	Column-$II$ (Reagent)
$A$. Mainly $p$-bromoanisole	$i$. Anhydrous $AlCl_3$,$CH_3COCl$
$B$. $4$-nitroanisole	$ii$. $CH_3Cl$,anhydrous $AlCl_3$ in $CS_2$
$C$. $4$-methoxytoluene	$iii$. $Br_2$ in ethanoic acid
$D$. $4$-methoxyacetophenone	$iv$. Mixture of conc. $H_2SO_4$ and $HNO_3$

Which of the following compounds will not give benzoic acid upon boiling with alkaline $KMnO_4$ followed by acidification?

The reaction of anisole with acetyl chloride in the presence of anhydrous $AlCl_3$ gives $X$ and $Y$. $X$ and $Y$ are

Which of the following compounds when heated with $CO$ at $150^{\circ} C$ and $500 \ atm$ pressure in the presence of $BF_3$ forms ethyl propionate?

Williamson's synthesis is used to prepare