Which of the following processes does not involve the absorption of infrared radiation?
The warming of the atmosphere by greenhouse gases such as carbon dioxide.
The vibrational excitation of covalent bonds in an organic molecule during spectroscopy.
The homolytic fission of chlorine molecules during free-radical substitution.
The thermal warming of objects by an infrared heater.
21 exam-style questions on AQA A Level Chemistry Organic analysis, covering Identification of functional groups by test-tube reactions, Mass spectrometry, and Infrared spectroscopy. Each one has a worked solution and a mark scheme showing where the marks go.