Multiple choice

Of the following fuels, one that causes minimum pollution is

  1. kerosene

  2. diesel

  3. coal

  4. hydrogen
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Hydrogen is correct because its combustion produces only water vapor (H2O), making it the cleanest burning fuel among the options. Coal produces maximum pollutants including CO2, SO2, NOx, and particulate matter. Diesel and kerosene are fossil fuels that produce various emissions including carbon monoxide, unburnt hydrocarbons, and particulates. Hydrogen fuel cells produce zero emissions at point of use.

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