Multiple choice general knowledge science & technology

Of the following burning fossil fuels, which is considered to be the cleanest?

  1. Coal

  2. Natural Gas

  3. Oil

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

Natural gas is the cleanest fossil fuel when burned. It produces primarily CO2 and water vapor with minimal pollutants like SO2, particulates, and mercury compared to coal and oil. Its high hydrogen-to-carbon ratio means more energy per unit of carbon emitted.

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