Which condition inside a gas burner causes carbon monoxide to be produced?
An excess supply of oxygen
A limited supply of oxygen
A high pressure of oxygen
A low pressure of oxygen
102 exam-style questions on AQA GCSE Chemistry 9.3 Common atmospheric pollutants and their sources, covering 9.3.1 Atmospheric pollutants from fuels and 9.3.2 Properties and effects of atmospheric pollutants. Each one has a worked solution and a mark scheme showing where the marks go.