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

Which of the following is an example of a combination reaction?

CaCO3 → CaO + CO2 2H2 + O2 → 2H2O Zn + CuSO4 → ZnSO4 + Cu 2AgCl → 2Ag + Cl2

Correct Answer:

2H2 + O2 → 2H2O

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