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Lakhmir Singh Solutions Class 10 Chemistry Solutions for Exercise in Chapter 1 - Chapter 1 Chemical Reactions and Equations

Question 25 Exercise

(a) Explain the following in terms of gain or loss of Oxygen with one example each:

(i) Oxidation (ii) reduction

Answer:

(a) Oxidation: A chemical reaction in which a substance gains oxygen is called oxidation.

Example:

2Cu + O2 = 2CuO (Cu is oxidized to CuO)

(b) Reduction: A chemical reaction in which a substance loses oxygen is called reduction.

Example:

ZnO + C = Zn + CO ( ZnO is reduced to Zn).

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