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Which of the following is metal displacement reaction

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Ca + 2H₂O → Ca(OH)₂ + H₂

2HgO → 2Hg + O₂

Zn + CuSO₄ → ZnSO₄ + Cu

2Na + 2H₂O → 2NaOH + H₂

answer is A.

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Detailed Solution

In a metal displacement reaction, a metal in a compound can be displaced by another metal in the uncombined state.

Ex: Zn + CuSO₄ → ZnSO₄ + Cu

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