Multiple choice general knowledge science & technology

Oil and natural gas are naturally occuring chemicals made of which two elements?

  1. carbon and oxygen

  2. carbon and hydrogen

  3. hydrogen and sulphur

  4. carbon and nitrogen
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Oil and natural gas are hydrocarbons, meaning they are composed primarily of hydrogen and carbon atoms. This is fundamental organic chemistry - the 'hydro' in hydrocarbons refers to hydrogen, and 'carb' refers to carbon. Oxygen is present in combustion products but not in the raw fuels. Nitrogen and sulfur are minor impurities in some deposits but not primary components.

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