O-LevelChemistryOrganic Chemistry5070/11 · Oct/Nov 2013 · Q371 Mark

The diagram shows the fractionation of crude oil. Which row explains why fraction R is collected above fraction S?

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Ahigher than S, greater than S

Bhigher than S, smaller than S

Clower than S, greater than S

Dlower than S, smaller than S

✓ Correct answer

D: lower than S, smaller than S

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Topic: Organic Chemistry, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, Oct/Nov 2013 Paper 1 Variant 1, question 37.

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