O-LevelChemistryOrganic Chemistry5070/12 · May/June 2022 · Q351 Mark

A series of reactions producing propanol from the naphtha fraction of petroleum (crude oil) is shown. What are processes X and Y?

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Acracking (X), reaction with steam (Y)

Bcracking (X), fermentation (Y)

Cfractional distillation (X), reaction with steam (Y)

Dfractional distillation (X), fermentation (Y)

✓ Correct answer

A: cracking (X), reaction with steam (Y)

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Topic: Organic Chemistry, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, May/June 2022 Paper 1 Variant 2, question 35.

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