Which of the following is the common name for peroxymonosulfuric acid?

The $K_a$ of $H_2O_2$ is of the order of:

$A$ colourless liquid $A$ contains $H$ and $O$ elements only. It decomposes slowly on exposure to light. It is stabilised by mixing urea to store in the presence of light.
$(i)$ Suggest the possible structure of $A$.
$(ii)$ Write the chemical equation for its decomposition reaction in light.

$H_2O_2 \to 2H^{+} + O_2 + 2e^-$; $E^\circ = -0.68 \ V$. This equation represents which of the following behavior of $H_2O_2$?

Identify the correct statement about $H_2O_2$.

The orange coloured compound formed when $H_2O_2$ is added to $TiO_2$ solution acidified with conc $H_2SO_4$ is