O-LevelChemistryMetals & Reactivity5070/11 · Oct/Nov 2010 · Q31 Mark

The diagram shows apparatus used to obtain carbon monoxide. What is the main purpose of Y?

This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.

Ato dry the gas

Bto prevent water being sucked back on to the hot carbon

Cto remove carbon dioxide from the gas

Dto remove hydrogen chloride from the gas

✓ Correct answer

C: to remove carbon dioxide from the gas

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Topic: Metals & Reactivity, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, Oct/Nov 2010 Paper 1 Variant 1, question 3.

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