ChemistryOxidation and reductionJAMB
Which of the following is a redox reaction?
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Answer: C. Zn + 2HCl → ZnCl₂ + H₂
Zinc goes from 0 to +2 and hydrogen from +1 to 0; no oxidation numbers change in the other reactions.
An AdmitMe practice question, written for the JAMB syllabus. Not an official past question.