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3MnO(2) + 4Al rarr 3 Mn + 2Al(2)O(3)+ he...

`3MnO_(2) + 4Al rarr 3 Mn + 2Al_(2)O_(3)+` heat. Identify the substances undergone oxidation and reduction reactions.

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`MnO_(2)` is reduced to Mn. Al is oxidised to `Al_(2)O_(3)`
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