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Question

Which of the following will not be oxidised by O3?
(IIT-JEE, 2005)

A
KI
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B
FeSO4
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C
KMnO4
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D
K2MnO4
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Solution

The correct option is C KMnO4
Since in KMnO4, the highest oxidation state of Mn is +7, so it will not be oxidised.

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