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Question

In the reaction 3MnO2+4Al3Mn+2Al2O3 the oxidizing agent is:

A
MnO2
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B
Al
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C
Al2O3
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D
Mn
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Solution

The correct option is A MnO2
+43MnO2+4Al03Mn+2Al2O3
{Decrease in oxidation number: Reduction}
MnO2 is undergoing redcution and it is also a source for adding O2 in Al, So it acts as oxidising agent.

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