Catalytic converters reduce what pollutant?

Catalytic converters reduce what pollutant?

• A. Particulates
• B. Carbon monoxide and hydrocarbons
• C. Nitrogen oxides
• D. Sulfur dioxide

Answer: (B)

Catalytic converters use metal catalysts to transform harmful components of exhaust into less harmful substances. In typical vehicle exhaust, carbon monoxide and unburned hydrocarbons are converted into carbon dioxide and water, reducing the amount of these pollutants released into the air. They also help lower nitrogen oxides, but the most direct and prominent targets are carbon monoxide and hydrocarbons. Particulates aren’t removed by the catalytic converter, and sulfur dioxide comes from fuel sulfur rather than the converter’s main action.

Catalytic converters use metal catalysts to transform harmful components of exhaust into less harmful substances. In typical vehicle exhaust, carbon monoxide and unburned hydrocarbons are converted into carbon dioxide and water, reducing the amount of these pollutants released into the air. They also help lower nitrogen oxides, but the most direct and prominent targets are carbon monoxide and hydrocarbons. Particulates aren’t removed by the catalytic converter, and sulfur dioxide comes from fuel sulfur rather than the converter’s main action.