Florida Wastewater Practice Test 2026 – Complete Exam Prep

Question: 1 / 400

The combination of methane and which substance can be very combustible?

Hydrogen

Carbon dioxide

Oxygen

The combination of methane and oxygen is known to be very combustible due to the chemical reaction that occurs when they mix, especially in the presence of heat. Methane (CH4) is a hydrocarbon that, when combined with oxygen (O2), undergoes combustion to produce carbon dioxide (CO2) and water (H2O) while releasing energy in the form of heat and light. This exothermic reaction is what makes methane a valuable fuel source and is fundamental to processes in both heating and power generation.

The efficiency and intensity of combustion reactions involving methane are heavily dependent on the availability of oxygen, as a sufficient supply is required for the complete combustion process. Without enough oxygen, methane can lead to incomplete combustion, producing carbon monoxide, which is less desirable and more dangerous. Therefore, when discussing combustibility, oxygen is crucial for ensuring that methane can burn effectively and efficiently.

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Nitrogen

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