Question

give advantages of oxygen hydrogen fuel cell.

Answer 1

1.Unless an organic fuel like a hydrocarbon or an alcohol is used, there will be no greenhouse gases like carbon dioxide, because hydrogen combustion only produces harmless water
2.A fuel cell creates water and water is abundant on earth, it is effectively a renewable resource, unlike petrol or diesel.
3.Fuel Cell could be used in countries with little oil and make them less dependent

Answer 2

1.renewable source. २.non polluting. ३.available in abundance. ४.causes no greenhouse gas emmission.