What is formed when sulfur dioxide reacts with bromine water?

Which of the following elements is the best oxidizing agent?

Mention three areas in which $H_2SO_4$ plays an important role.

Identify the correct statements from the following.
$(i)$ Oxygen shows $-2, -1, +1$ and $+2$ oxidation states.
$(ii)$ The thermal stability of $H_2O, H_2S$ and $H_2Se$ follows the order $H_2O < H_2S < H_2Se$.
$(iii)$ The reducing nature of $H_2S, H_2Se$ and $H_2Te$ follows the order $H_2S < H_2Se < H_2Te$.

Which one of the following is most acidic?

When $SO_2$ is passed through an acidified solution of $H_2S$,what happens?