When Conc. $H_2SO_4$ is added to charcoal :-

Which gas has a pungent and suffocating odor?

Sulphur dioxide reacts with chlorine in the presence of charcoal to give

Write the conditions to maximize the yield of $H_2SO_4$ by Contact process.

White phosphorus reacts with sulphuryl chloride to form $PCl_5$ and $X$. Chlorine reacts with $X$ in the presence of wood charcoal to form $Y$. $X$ and $Y$ are respectively

Which of the following compounds has a peroxide linkage?