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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. β€’ Single displacement reaction: These are the reactions in which one reactant replaces part of the other. β€’ For example: Fe + CuSO4 β†’ FeSO4 + Cu. β€’ Double displacement reaction: These are the reactions in which the cations and anions in the reactants switch partners to form products. β€’ For example: AgNO3 + NaCl β†’ AgCl + NaNO3

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