Which of the following oxyacids of sulphur contains four $S=O$ bonds?

Identify the incorrect statement.

Peroxymonosulfuric acid is known as ..........

There is no $S-S$ bond in

Although fluorine is more electronegative than oxygen,the ability of oxygen to stabilize higher oxidation states exceeds that of fluorine. Why?

White silver surface turns black when $O_3$ is passed over it. This is due to the formation of