Assertion :In the reaction between potassium permanganate and potassium iodide, potassium permanganate act as oxidising agent. Reason: Oxidation state of manganese changes from +2 to +7 during the reaction.
A
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
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B
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
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C
Assertion is correct but Reason is incorrect
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D
Both Assertion and Reason are incorrect
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Solution
The correct option is C Assertion is correct but Reason is incorrect
2KMnO4+16HI→2KI+5I2+2MnI2+8H2O
In this reaction, KMnO4 act as an oxidizing agent because, in KMnO4,Mn is present in highest oxidation state so it can donate 4 oxygen atoms to achieve its natural oxidation state +2.
The assertion is correct but the reason is incorrect.