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Why is sufficient oxygen necessary for complete combustion of methane?

Answer and explanation

Correct answer: So that carbon dioxide and water form completely

Methane undergoes complete oxidation only when enough oxygen is available. Its balanced combustion equation is CH₄ + 2O₂ → CO₂ + 2H₂O, showing that two oxygen molecules are needed for each methane molecule. With an oxygen shortage, incomplete combustion may produce carbon monoxide and soot instead of fully oxidising carbon to carbon dioxide. Therefore option A states the purpose of sufficient oxygen correctly.

Related tags

MethaneComplete CombustionOxygenCombustion EquationHydrocarbonsCarbon And Its CompoundsScienceClass 10 Mcq

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