How many of the following statement about $H_2{O}_2$  are true:
1) $H_2{O}_2$ is used to clean oil paintings
2) A 30% solution of $H_2{O}_2$ is marked as ‘10’ volume Hydrogen peroxide
3) $H_2{O}_2$  structure in solid phase has dihedral angle ${111.5}^0$
4) Hydroxyl groups in $H_2{O}_2$ structure lie in the same plane.
5) It is used to manufacture chemicals like sodium per borate and per-carbonate.
6) Decomposition of $H_2{O}_2$ is an redox reaction