Which one of the following is the exhaust pipe emission from Fuel Cell Electric Vehicles, powered by hydrogen?
(a). Hydrogen peroxide
(b). Hydronium
(c). Oxygen
(d). Water vapour
Explanation:
The answer is: (d). Water vapor
Fuel cell electric vehicles (FCEVs)
powered by hydrogen produce only water vapor as an exhaust emission.
This makes them significantly cleaner
than traditional gasoline or diesel vehicles.
The other options are incorrect as they
are not products of the hydrogen-oxygen reaction in a fuel cell.