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O-LevelChemistryMetals & Reactivity5070/11 · May/June 2010 · Q261 Mark

An alloy of copper and zinc is added to an excess of dilute hydrochloric acid. Which observations are correct?

Agrey, blue solution

Bnone, blue solution

Cnone, colourless solution

Dred-brown, colourless solution

✓ Correct answer

D: red-brown, colourless solution

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About this question

Topic: Metals & Reactivity, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, May/June 2010 Paper 1 Variant 1, question 26.

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