CAIE IGCSE Chemistry: Petroleum Fraction Trends Question Bank
Practise comparing petroleum fractions by chain length, boiling point, volatility, viscosity and position in the column.
- Syllabus
- 2026–2028
- Course
- Chemistry 0620
Exam points
- link longer hydrocarbon chains to higher viscosity and lower flammability
- use column position to identify refinery gas, bitumen or the least volatile fraction
11.3.6—Petroleum fraction trends up the question 1
Question (a)
(a)
Petroleum can be separated into useful substances using the apparatus shown.
[ 3 ]
Question (i)
(i)
Name the fraction which is the most viscous.
[ 1 ]
Question (ii)
(ii)
Name the fraction with the smallest molecules.
[ 1 ]
Question (iii)
(iii)
Name the fraction which has the weakest attractive forces between molecules.
[ 1 ]
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