Catalytic converter is used to reduceans.automobile exhaust pollution.CO_2 emission.N_2 emission.factory exhaust pollution. Previous Marked for Review Next

The catalytic converter is used to reduce automobile exhaust pollution. It does this by converting harmful gases and compounds in exhaust into harmless compounds.

Here's a step-by-step explanation:

1. Exhaust gases from the engine of a vehicle are primarily composed of nitrogen gas (N2), water vapor (H2O), and carbon dioxide (CO2). However, they also contain harmful substances such as carbon monoxide (CO), nitrogen oxides (NO and NO2), and unburnt hydrocarbons (HC).

2. These harmful substances are the ones that cause air pollution and are harmful to both the environment and human health.

3. When these exhaust gases pass through the catalytic converter, they come into contact with catalysts. These catalysts are usually made of platinum, palladium, and rhodium.

4. The catalysts trigger chemical reactions that convert the harmful gases into harmless substances.

   • Carbon monoxide (a poisonous gas) and unburnt hydrocarbons (which contribute to smog) are converted into carbon dioxide and water vapor.

   • Nitrogen oxides (which contribute to smog and acid rain) are converted into nitrogen and oxygen.

5. The treated exhaust gases then exit the vehicle through the exhaust pipe.

So, the correct answer to your question is that a catalytic converter is used to reduce automobile exhaust pollution.