Single Answer MCQ
Q-00004430
Which equation is an example of a combustion reaction?
1
Zn + HCl → ZnCl2 + H2
2
CH4 + 2O2 → CO2 + 2H2O
3
Na + Cl2 → 2NaCl
4
CaCO3 → CaO + CO2
Answer and Solution
Answer
B. CH4 + 2O2 → CO2 + 2H2O
Solution:
The equation CH4 + 2O2 → CO2 + 2H2O is a combustion reaction where a hydrocarbon (methane) reacts with oxygen producing carbon dioxide and water.
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