Practice question

What is the chemical function of a catalytic converter in an automotive exhaust system?

To filter carbon soot particles using a porous paper element
To convert harmful Carbon Monoxide, Hydrocarbons, and Nitrogen Oxides into Carbon Dioxide, Water, and Nitrogen
To mix oxygen with unburned petrol to restart combustion in the exhaust
To chemically cool down exhaust gases to prevent exhaust system melting

Answer: B — To convert harmful Carbon Monoxide, Hydrocarbons, and Nitrogen Oxides into Carbon Dioxide, Water, and Nitrogen

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