Question

5.Which of the the following is double displacement reaction?


1. BaCl₂+H₂SO₄------>BaSO₄+2HCl

2. CaCO₃-------.>CaO+CO₂

3. ZnCO₃--------->.ZnO+CO₂

4. H₂+I₂---------.>HI

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Answer 1

Explanation:

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1. Chlorine displaced itself from From barium combine it with Hydrogen.

2. Sulphur displaced itself from Hydrogen and combined with barium.

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Answer 2

Answer:

1 is the correct answer

Explanation:

in double displacement reaction two element exchange their ions

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