Question
In which chemical reaction does the substance react with oxygen to produce heat?
This question was previously asked in
RPF Constable 2018 Question Paper PDF (16-Feb-2019) (Shift 2)
The correct answer is
Combustion
Combustion is correct.
Combustion is a reaction in which a substance reacts with oxygen and gives out heat, and usually light as well. The substance that burns is called a combustible substance or fuel.
For example, when methane burns: \(\mathrm{CH_4 + 2O_2 \rightarrow CO_2 + 2H_2O}\) + heat.
Oxidation is the wider term for any gain of oxygen and need not release noticeable heat, as in slow rusting, and an explosion is only a very rapid form of combustion.
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