question_answer

Directions : In the following question more than one of the answers given may be correct. Select the correct answer and mark it according to the code:

Which of the following are oxidised by\[{{O}_{3}}\]? (1)\[KI\]                               (2) \[FeS{{O}_{4}}\] (3) \[{{K}_{2}}Mn{{O}_{4}}\]                       (4) \[KMn{{O}_{4}}\]

A)  1, 2 and 3 are correct

B)  1 and 2 are correct

C)  2 and 4 are correct

D)  1 and 3 are correct

Correct Answer: A

Solution :

                \[KMn{{O}_{4}}+{{O}_{3}}\xrightarrow{{}}No\text{ }reaction\] because in KMn04 oxidation state of\[Mn\] is + 7. Hence, it is the highest oxidation state of Mn. So,\[KMn{{O}_{4}}\]is not oxidised by ozones.