Q.1
Which layer does the conversion of chemical energy of reactants to electrical energy, heat and water occur?
  • Catalyst layer
  • Electrolyte layer
  • Gas Diffusion layer
Q.2
Which layer enables the fuel cell to conduct its electrons by attracting the hydrogen protons that are sent to the cathode?
  • Electrolyte
  • Catalyst
  • Gas Diffusion
  • Bipolar plate
Q.3
Which one of the following state is true for both fuel cells and rechargeable cells?
  • All reactants are stored within the cell.
  • Reaction products are continuously removed from the cell.
  • Electrons pass from the reductant to the anode as electricity is produced.
  • Electrical energy is converted to chemical energy as the cell is recharged.
Q.4
The energy released in a chemical reaction is directly converted to electrical energy in al
  • solar cell
  • electrolytic cell
  • fossil-fuel power station
  • hydrogen/oxygen fuel cell
Q.5
The half-equation for the reaction occurring at the (+) electrode in a hydrogen-oxygen fuel which has an alkaline electrolyte would be
  • H2(g) + 2OH-(aq)→ 2H2O(l) + 2e-
  • H2(g) → 2H+(g) + 2e-
  • O2(g) + 4H+(aq) + 4e- → 2H2O(l)
  • O2(g) + 2H2O(l) + 4e- → 4OH- (aq)
Q.6
O2 + 4H+ + 4e- = 2H2O
  • cathode reac
  • anode reac
  • net reac
  • none
Q.7
Which fuel cell can be operated at high temperatures up todegree Celsius.
  • solid oxide
  • molten carbonate
  • alkaline
  • phosphoric acid
Q.8
Yttria stabilized zirconia used as an electrolyte in
  • alkaline fuel cell
  • molten carbonate fuel cell
  • phosphoric acid fuel cell
  • solid oxide fuel cell
Q.9
What is the electrolyte in methanol fuel cell?
  • sodium hydroxide
  • aqueous phosphoric acid solution
  • water
  • air
Q.10
In Hydrazine fuel cell, which electrolyte is generally use
  • potassium hydroxide
  • hydrogen peroxide
  • oxygen
  • hydrazine
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