Punjab PSEB Matric Science Practice Questions - Punjab School Education Board (PSEB) Matric (Class 10) Science - Physics, Chemistry & Biology Exam

Which reaction is a double displacement (precipitation) reaction?

2Mg + O₂ → 2MgO Zn + H₂SO₄ → ZnSO₄ + H₂ Na₂SO₄ + BaCl₂ → BaSO₄ + 2NaCl 2H₂O₂ → 2H₂O + O₂

Correct Answer:

Na₂SO₄ + BaCl₂ → BaSO₄ + 2NaCl

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