What is the cleanest type of fuel?
GeneralClass 12AllAnswered 27 Mar 2026
Answer
Hydrogen is often considered the cleanest fuel as it produces only water when burned. However, ammonia is emerging as a carbon-free fuel alternative that's easier to store and transport than hydrogen. When combusted, ammonia produces nitrogen and water without carbon emissions, though nitrogen oxides require management. The "cleanest" designation depends on production methods and application.
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