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    Question

    When copper sulphate solution reacts with iron metal,

    copper metal is formed. Which of the following reactions is this?
    A Decomposition reaction Correct Answer Incorrect Answer
    B Combination reaction Correct Answer Incorrect Answer
    C Single displacement reaction Correct Answer Incorrect Answer
    D Double displacement reaction Correct Answer Incorrect Answer

    Solution

    A displacement reaction is a type of reaction in which part of one reactant is replaced by another reactant. • Single displacement reaction: These are the reactions in which one reactant replaces part of the other. • For example: Fe + CuSO4 → FeSO4 + Cu. • Double displacement reaction: These are the reactions in which the cations and anions in the reactants switch partners to form products. • For example: AgNO3 + NaCl → AgCl + NaNO3

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