Teaching UP TGT Mock Test Series 2025 General Science Chemistry Chemical Reaction

Which of the following reactions is an example of a displacement reaction?

1

2FeSO₄ (s) ——→ Fe₂O₃ (s) + SO₂ (g) +SO₃ (g)

2

3Fe (s) + 4H₂O (I) ——→ Fe₃O₄ (s) + 2H₂ (I)

3

Zn (s) + CuSO₄ (aq) ——→ ZnSO₄ (aq) + Cu (s)

4

CaO (s) + H₂O (I) ——→ Ca(OH)₂ (aq) + Heat

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