Hydrogen fuel cell vehicles produce one of the following as "exhaust"
(a) NH3 (b) CH4 (c) H2O (d) H2O2
(c) A hydrogen vehicle is an alternative fuel vehicle that uses hydrogen as its onboard fuel for motive power. The hydrogen vehicle use hydrogen fuel cell for generation of motive power. These fuel cell in which hydrogen serve as a fuel and oxygen as an oxidant emits exhaust of water.
