Which statement about the complete combustion of a hydrocarbon fuel is correct?
All of the carbon in the fuel is released as carbon monoxide.
All of the hydrogen in the fuel is released as hydrogen gas.
Some of the carbon in the fuel is released as solid soot.
All of the carbon in the fuel is released as carbon dioxide.
40 exam-style questions on AQA GCSE Chemistry 7.1 Carbon compounds as fuels and feedstock, covering 7.1.1 Crude oil, hydrocarbons and alkanes, 7.1.2 Fractional distillation and petrochemicals, 7.1.3 Properties of hydrocarbons, and 7.1.4 Cracking and alkenes. Each one has a worked solution and a mark scheme showing where the marks go.