What this tests
Syllabus point 11.3 — Fuels, in Organic chemistry. Difficulty medium (estimated from the question's demands, not a Cambridge rating).
Also set in
The same question, as Cambridge printed it in other papers.
Cambridge IGCSE Chemistry 0620 · 11.3 Fuels
June 2018 · Paper 22 · Question 35
One real Cambridge question from Organic chemistry, with the official answer. Cambridge has printed this question 4 times.