Question

Which of the following is not a combination reaction? CaO(s)+H₂O(l) → Ca(OH)₂(aq)
C(s)+O₂(ɡ) → CO₂(ɡ)
2H₂(ɡ)+O₂(ɡ) → 2H₂O(l)
Zn(s) + CuSO₄(aq ) → ZnSO₄(aq) + Cu(s)​

Answer 1

Answer:

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

is displacement reaction not combination reaction

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Answer 2

Zn(s) +CuSO4(aq)_ ZnSO4(aq) + Cu(s) is not a combination reaction
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