Which of the following is not an example of a fuel cell?
(a) Hydrogen-oxygen cell
(b) Methyl-oxygen-alcohol cell
(c) Propane-oxygen cell
(d) Hexanone-oxygen cell
I have been asked this question in an international level competition.
My question is from Fuel Cells in division Corrosion, Electrolysis, Fuel Cells and Batteries of Engineering Chemistry II