Q.
Which of the following is metal displacement reaction
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a
Zn + CuSO4 → ZnSO4 + Cu
b
2Na+2H2O→2NaOH+H2
c
Ca+2H2O→Ca(OH)2+H2
d
2HgO→2Hg+O2
answer is A.
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Detailed Solution
Metal displacement reaction involves ,displacement of less electropositive metal by a more electropositive metal.Zn being more electropositive than Cu it displaces Cu from CuSO4
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