Chlorofluorocarbons (CFCs) are known for their role in ozone depletion, stemming from their stability and persistence in the atmosphere. They are primarily used in the production of plastic foams (1) due to their properties as a blowing agent, in cleaning electronic components (3) as solvents that effectively remove contamination, and as pressurizing agents in aerosol cans (4) for their ability to create a propellant effect. However, their use in the production of tubeless tyres (2) is not common, as other materials and compounds are preferred for tire manufacturing, rendering this statement incorrect. Thus, statements 1, 3, and 4 are the correct applications of CFCs.