O-LevelChemistryChemistry of the Environment5070/11 · Oct/Nov 2013 · Q301 Mark

The noble gases, argon, helium, krypton and xenon, are present in air. Which noble gas is present in the largest proportion?

Aargon

Bhelium

Ckrypton

Dxenon

✓ Correct answer

A: argon

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Topic: Chemistry of the Environment, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, Oct/Nov 2013 Paper 1 Variant 1, question 30.

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