Discussion
Which one of the following is essentially present in the fossil fuels along with carbon ?
Answer: B
Along with carbon, fossil fuels essentially contain hydrogen.
Coal, petroleum and natural gas are made up of hydrocarbons and related compounds, formed from the remains of ancient organisms. Their energy comes mainly from burning carbon and hydrogen to carbon dioxide and water. Methane, the main component of natural gas, is CH4; petroleum is a mixture of hydrocarbons; even coal contains several per cent hydrogen.
Nitrogen, sulphur and oxygen do occur in fossil fuels, but only in variable, often small amounts as impurities, and some fuels have very little of them. Sulphur in particular is a pollutant source, not an essential part of a fuel.
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