Complete the sentences about hydrocarbons and the fractions obtained from crude oil.
As the molecular size of the hydrocarbons in a fraction increases, their flammability .....
Compared to petrol, the boiling point of diesel is .....
When a hydrocarbon fuel undergoes incomplete combustion in a limited supply of air, the toxic gas produced is .....
130 exam-style questions on Edexcel GCSE Chemistry 9.1 Fuels, covering 9.1.1 Hydrocarbons and crude oil, 9.1.2 Fractional distillation of crude oil and its fractions, 9.1.3 The alkanes as a homologous series, 9.1.4 Complete and incomplete combustion, 9.1.5 Pollutants from burning fuels, 9.1.6 Hydrogen as a fuel and non-renewable fossil fuels, and 9.1.7 Cracking of larger alkanes. Each one has a worked solution and a mark scheme showing where the marks go.