Chemistry · May / June 2018 · Paper 12 · Question 20
5070Redox
Which reactions involve oxidation and reduction? 1 chlorine gas reacting with aqueous potassium iodide 2 dilute sulfuric acid reacting with magnesium 3 dilute hydrochloric acid reacting with aqueous sodium hydroxide
- A1, 2 and 3
- B1 and 2 only
- C1 and 3 only
- D2 and 3 only
As printed in the paper
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Correct answer: B. 1 and 2 only
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