Question

Which of the following compound cannot be oxidised by $O_3$?

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

Answer 1

Answer: (B)

$KMn{O}_4$

Oxidation is the ability of a compound to lose the electron as the $Mn$ in $KMn{O}_4$ is exhibiting maximum oxidation state +7. It does not undergo oxidation. (It do not have the ability to lose further more electrons).

Hence option B is correct.