Question

$O_3$ does not oxidise:

• A. $KI$
• B. $FeS{O}_4$
• C. $KMn{O}_4$
• D. $K_{2}Mn{O}_4$

Answer 1

The correct option is C $KMn{O}_4$

Oxidisable species should be in an oxidation state other than their highest state. In $KMn{O}_4$, $Mn$ is in its highest oxidation state i.e +7. So, it cannot be oxidised further.