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Uses of Metals

In the reacti...

Question

In the reaction, $F e_{2} O_{3} + 2 A l \to 2 F e + A l_{2} O_{3} +$ $h e a t$ , the substance that is oxidised is and the substance that is reduced is _.

Al, Fe

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Fe, Al

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Al,

O_{2}

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O_{2}

, Fe

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Solution

The correct option is D Al, Fe
In the reaction, $F e_{2} O_{3} + 2 A l \to 2 F e + A l_{2} O_{3} +$ $h e a t$ , the substance that is oxidised is $A l$ and the substance that is reduced is $F e$ . The oxidation number of $A l$ increases from 0 to +3 and the oxidation number of $F e$ decreases from +3 to 0 .

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