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(1) About a hydrogen fuel cell, (a) The fuel is hydrogen. (b) There is an oxidation...

(1) About a hydrogen fuel cell, (a) The fuel is hydrogen. (b) There is an oxidation reaction on the surface of the anode. (c) The current flows from the anode to the cathode through the external circuit. (d) There is an oxidation on the surface of the cathode.

(2) A fuel cell includes: (a) An anode and a cathode (b) A layer of electrolyte (c) Two resistors (d) one capacitor

(3) About a bipolar plate, (a) It is used in a fuel cell stack. (b) Its electrical conductivity should be high. (c) Its heat conductivity should be high. (d) It is used as an anode.

(4) About an ideal open circuit voltage, (a) It will increase if the operating temperature increases. (b) It is related to the size of a fuel cell. (c) It is the maximum voltage that can be obtained. (d) It is the minimum voltage that can be obtained.

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