• # question_answer Which of the following cannot be oxidised by ${{H}_{2}}{{O}_{2}}$ A) ${{O}_{3}}$ B) $KI/HCl$ C) PbS D) $N{{a}_{2}}S{{O}_{3}}$

${{H}_{2}}{{O}_{2}}$ reduces ${{O}_{3}}$ to ${{O}_{2}}$ ${{O}_{3}}+{{H}_{2}}{{O}_{2}}\to {{H}_{2}}O+2{{O}_{2}}$