O-LevelChemistryBonding & Structure5070/11 · Oct/Nov 2010 · Q41 Mark

The boiling points of various gases found in the air are shown below. °C argon -186 carbon dioxide -78 nitrogen -198 oxygen -183 If the air is cooled, the first substance to condense is water. If the temperature is lowered further, what is the next substance to condense?

Aargon

Bcarbon dioxide

Cnitrogen

Doxygen

✓ Correct answer

B: carbon dioxide

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Topic: Bonding & Structure, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, Oct/Nov 2010 Paper 1 Variant 1, question 4.

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