Odisha BSE HSC General Science Practice Questions - Odisha BSE HSC Class X General Science (GSC) - Physical Science & Life Science Exam

Which reaction is a double displacement (precipitation) reaction?

2Mg + O2 → 2MgO 2H2O → 2H2 + O2 CuO + H2 → Cu + H2O Na2SO4 + BaCl2 → BaSO4 + 2NaCl

Correct Answer:

Na2SO4 + BaCl2 → BaSO4 + 2NaCl

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