Iron has replaced or eliminated copper in the copper sulphate solution. This reaction is known as a displacement reaction, and displacement reactions include the following:

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Redox reaction

Exothermic and Endothermic reaction

Exothermic reaction

Endothermic reaction

answer is B.

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Detailed Solution

Iron has replaced or eliminated copper in the copper sulphate solution. This process is known as a displacement reaction. During the displacement heat is generated and hence it is an exothermic reaction.

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