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What is meant by oxidation and reduction reactions ? Explain it by giving examples

Answer»

Solution :Chemical REACTION in which a substance (atom or MOLECULE) gains oxygen or loses hydrogen is called an OXIDATION reaction.
For example
`C+O_(2) to CO_(2)`
`2Mg+O_(2) to 2MgO`
`2Cu+O_(2) to 2CuO`
In above reactions, C, Mg and Cu gain oxygen, and undergo oxidation reactions.
Chemical reaction in which a substance (atom or molecule) loses oxygen or gains hydrogen is called reduction reaction.
For example, `CuO + H_(2) toCu + H_(2)O`
` CO_(2) + H_(2) toCO + H_(2)O`
`MGO + H_(2) to Mg + H_(2)O`
In above reactions, `CuO, CO_(2)` and MgO lose oxygen. Hence, these are reduction reactions.


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