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How are hydrogen and oxygen introduced into the fuel cell?

Options

  1. AThey are injected as a liquid mixture.
  2. BThey are bubbled through porous carbon electrodes.
  3. CThey are directly added to the concentrated aqueous sodium hydroxide solution.
  4. DThey are mixed with platinum or palladium catalysts.

Correct answer

B. They are bubbled through porous carbon electrodes.

Step-by-step solution

In the fuel cell, hydrogen and oxygen are bubbled through porous carbon electrodes into concentrated aqueous sodium hydroxide solution.

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