Multiple choice

Which of the following reactions will take place according to the activity series of metals?

  1. MgSO4 + Cu → CuSO4 + Mg

  2. ZnSO4 + Cu → CuSO4 + Zn

  3. Fe + CuSO4 → FeSO4 + Cu

  4. Pb + ZnSO4 → PbSO4 + Zn
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C Correct answer
Explanation

According to the reactivity series of metals, a more reactive metal displaces a less reactive metal from its salt solution. Iron is more reactive than copper, so it successfully displaces copper from copper sulfate solution (Fe + CuSO4 -> FeSO4 + Cu).

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