Question

Which of the following chemical reactions is an example of a double displacement reaction?
1 2H2 + O2 -----------> 2H2O
2 Zn + CuSO4 -----------> ZnSO4 + Cu
3 Na2SO4 + BaCl2 ----------> BaSO4 + 2NaCl
4 MnO2 + 4HCl ----------> MnCl2 + 2H2O + Cl2

Answer 1

Answer:

Na2SO4 + BaCl2 ------------- BaSO4+2NaCl is the right answer

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Answer 2

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