Answer:
reaction between oxygen and hydrocarbon is combustion
The compound would most likely be the reactants in a combustion reaction is oxygen and hydrocarbon.
Those reaction in which a fuel will change into a water molecule and carbon dioxide gas, in the presence of oxygen is known as combustion reaction.
Combustion reaction will represent as:
CₓHₙ + O₂ → H₂O + CO₂, where
CₓHₙ is a hydrocarbon which gets oxidized in the presence of oxygen oxidant.
Hence option (2) is correct i.e. oxygen and hydrocarbon.
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