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

Question

$$\begin {array} {1 1} (1)\;Ti_2O_3 & \quad (2)\;H_2Ti_2O_8 \\ (3)\;H_2TiO_3 & \quad (4)\;H_2T_iO_4 \end {array}$$