Final answer:
A reduction catalytic converter on a diesel engine minimizes NOx emissions, converting them into less harmful nitrogen and oxygen, thus reducing photochemical smog.
Therefore, the correct answer is: option b) NOx
Step-by-step explanation:
Catalytic converters are designed to promote a chemical reaction where NOx is converted into nitrogen (N2) and oxygen (O2), effectively reducing the amount of these harmful emissions in the exhaust gases.
When a reduction catalytic converter is used on a current diesel engine, it is attempting to minimize the emissions of nitrogen oxides (NOx). This process is crucial for decreasing the contribution of NOx to photochemical smog and improving air quality.
A catalytic converter is a simple device that uses basic redox reactions to reduce the pollutants a car makes. It converts around 98% of the harmful fumes produced by a car engine into less harmful gases. It is composed of a metal housing with a ceramic honeycomb-like interior with insulating layers.