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Oxidation and Reduction

An is a subst...

Question

An ___ is a substance that tends to bring about oxidation by being reduced.

A

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B

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C

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D

All of these

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Solution

The correct option is A
In chemistry, an oxidizing agent (oxidant, oxidizer) is a substance that has the ability to oxidize other substances. Common oxidizing agents are oxygen, hydrogen peroxide and the halogens.

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Q. If a substance gains oxygen during a reaction, it is being oxidized. If it loses oxygen, it is being reduced. Oxidation and Reduction always take place together, so that if one substance is oxidized, another is reduced. Using this idea, say which substance is oxidised and which substance is reduced in each reaction.
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F e_{2} O_{3} + 3 C O \to 2 F e + 3 C O_{2}

C r_{2} O_{3} + 2 A l \to 2 C r + A l_{2} O_{3}

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