Question

Which of the following will not be oxidised by $O_3$?
(IIT-JEE, 2005)

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

Answer 1

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

Since in $KMn{O}_4,$ the highest oxidation state of Mn is +7, so it will not be oxidised.