A gas boiler in a house is faulty and it releases carbon monoxide into a room.
Give two properties of carbon monoxide that make it difficult for the people in the room to detect.
Suggest why a carbon monoxide alarm should be fitted in a room that contains a gas boiler.
40 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.