Question

We must know that the $KMn{O_4}$ is a strong oxidizing agent that donates nascent oxygen to oxidize another substrate. Therefore, in the Alkaline medium $KMn{O_4}$ will oxidize iodide to iodate by reducing itself.

Answer 1

We must know that the $KMn{O_4}$ is a strong oxidizing agent that donates nascent oxygen to oxidize another substrate. Therefore, in the Alkaline medium $KMn{O_4}$ will oxidize iodide to iodate by reducing itself.

Complete step by step answer:
$KMn{O_4}$ is a strong oxidizing agent only when it has an oxidation state with $Mn$ is +7 states. $KMn{O_4}$ will not act as an oxidizing agent in an acidic medium as there is a change of 5 electrons. So, in the alkaline medium only it will act as an oxidizing agent.
When alkaline $KMn{O_4}$ is treated with$KI$,$\;{I^ - }$ is oxidized to $IO^3-$ by losing six electrons .or Iodide is oxidized to iodate ions.
Therefore, we can write the reaction as

$$2KMnO_4 + H_2O + KI \to 2Mn{O_2} + 2KOH + KIO_3 \\\ I + 6O{H^ - } \to IO{3^ - } + 3{H_2}O + 6e^- \\\$$

$KMn{O_4}$​ acts as an oxidizing agent in this reaction, as in $KMn{O_4}$,$Mn$ is present in the highest oxidation state so it can readily donate 4 oxygen atoms to achieve its oxidation state +2.
So, the correct option is C

Note:
-Potassium Permanganate ($KMn{O_4}$) is an inorganic chemical compound. It is also known as Condy’s crystals or permanganate of potash
-We can use potassium permanganate in qualitative analysis to determine the permanganate value
-Also, we can use $KMn{O_4}$ as a regeneration chemical in well water treatment for the removal of hydrogen sulfide and iron
-This compound is also used as a disinfectant to cure certain skin conditions like foot fungal infections, dermatitis
-Another important application of potassium permanganate is in the treatment of bacterial infections
$KMn{O_4}$ is also known to be used in tanning leathers, printing fabrics
This compound can even be used as a bleaching agent, as a pesticide, and as an antiseptic