Single Answer MCQ
Q-00019167
Which equation is an example of a decomposition reaction?
1
2H2 + O2 → 2H2O
2
Zn + H2SO4 → ZnSO4 + H2
3
CaCO3 → CaO + CO2
4
H2 + Cl2 → 2HCl
Answer and Solution
Answer
C. CaCO3 → CaO + CO2
Solution:
CaCO3 → CaO + CO2 is a decomposition reaction where calcium carbonate breaks down into calcium oxide and carbon dioxide. The other options represent combination or displacement reactions.
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