O-LevelChemistryMetals & Reactivity5070/11 · May/June 2010 · Q241 Mark

Which substances react together to give hydrogen?

Acalcium oxide and water

Bcopper and dilute sulfuric acid

Ccopper and steam

Dmagnesium and steam

✓ Correct answer

D: magnesium and steam

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Topic: Metals & Reactivity, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, May/June 2010 Paper 1 Variant 1, question 24.

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