MCQOPTIONS
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| 1. |
How does hydrogen fuel cell work? |
| A. | Membrane → hydrogen ions → electric current and recombination with oxygen |
| B. | Electric current and recombination with oxygen → hydrogen ions → membrane |
| C. | Hydrogen ions → membrane → electric current and recombination with oxygen |
| D. | Recombination with oxygen → electric current → membrane → hydrogen ions |
| Answer» E. | |