Among the following, molecules which contain both polar and non-polar bonds are

${\mathrm{H}}_2{\mathrm{O}}_2$ is a open book structure

E.N value of oxygen = 3.5

E.N value of Hydrogen = 2.1

The difference =3.5- 2.1 =1.4

i) Oxygen atom attracts shaped pair of to “H” atom this is polar bond. 

ii) In b/w oxygen atom and oxygen atom electron can be shared this is non polar bond.