What type of gases do catalytic converters transform?

Catalytic converters are devices installed in the exhaust system of vehicles to reduce pollution. They primarily transform harmful gases produced during combustion, such as carbon monoxide, nitrogen oxides, and unburned hydrocarbons, into less harmful emissions like carbon dioxide and nitrogen. This process involves chemical reactions facilitated by catalysts, typically made of platinum, palladium, and rhodium.

The transformation from harmful to less harmful gases is essential for meeting environmental regulations and improving air quality. By converting these toxic gases, catalytic converters play a significant role in decreasing the overall emission of pollutants from vehicles. Thus, the choice accurately reflects the primary function of catalytic converters in mitigating the environmental impact of automotive exhaust.