Multiple choice general knowledge science & technology

Crude oil is made of

  1. Black stuff

  2. Hydrogen and carbon

  3. Hydrocarbons and impurities

  4. None of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Crude oil is primarily composed of hydrocarbons (mixtures of hydrogen and carbon molecules) plus impurities like sulfur, nitrogen, oxygen compounds, and metals. The hydrocarbons range from light gases to heavy tars, which refineries separate into different products.

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