A-LevelChemistryElectrochemistry9701/12 · Feb/Mar 2023 · Q71 Mark

Silicon reacts with a mixture of calcium oxide and magnesium oxide at 1200 °C. 2MgO + 2CaO + Si → 2Mg + Ca2SiO4 Which statement about this reaction is correct?

ACalcium is reduced and silicon is neither oxidised nor reduced.

BMagnesium is reduced and calcium is neither oxidised nor reduced.

CMagnesium is reduced and silicon is neither oxidised nor reduced.

DSilicon is reduced and calcium is neither oxidised nor reduced.

✓ Correct answer

B: Magnesium is reduced and calcium is neither oxidised nor reduced.

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Topic: Electrochemistry, A-Level Chemistry (syllabus 9701). Multiple choice, 1 mark.
Source: A-Level Chemistry, Feb/Mar 2023 Paper 1 Variant 2, question 7.

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