Everyday Science Hard css fpsc

Which gas is produced during electrolysis of water at the negative electrode called the cathode?

  • A Oxygen
  • B Nitrogen
  • C Hydrogen
  • D Carbon dioxide
Correct Answer: Option C — Hydrogen
Explanation: During electrolysis of water hydrogen gas is produced at the negative electrode cathode at twice the volume of oxygen produced at the anode due to water's H2O composition.
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MCQ Details
SubjectEveryday Science
DifficultyHard
Exam Typescss, fpsc
CorrectOption C
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