Sulphuric acid reacts with $PCl_5$ to give

Which element from the following does $NOT$ belong to the chalcogen family?

How is the presence of $SO_{2}$ detected?

Identify the method used to obtain $SO_2$ gas in industry.

Ozone is obtained from oxygen

Given below are two statements: Statement $I$: The covalency of oxygen is generally two but it can exceed up to four. The oxidation state of oxygen in $SO_2$ is $-2$ and in $OF_2$ it is $+2$. Statement $II$: The anomalous behaviour of oxygen when compared to the other elements of group $16$ is due to its small size and high electronegativity. In the light of the above statements, choose the correct answer from the options given below.