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Chemistry · Oct / Nov 2018 · Paper 12 · Question 19

5070Redox

Which reaction is a redox reaction?

  1. AMg + 2HCl → MgCl2 + H2
  2. BMgCO3 + 2HCl → MgCl2 + H2O + CO2
  3. CMgO + 2HCl → MgCl2 + H2O
  4. DMg(OH)2 + 2HCl → MgCl2 + 2H2O

As printed in the paper

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Correct answer: A. Mg + 2HCl → MgCl2 + H2

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