Catalytic converter is used to reduce ans. CO_2 emission. automobile exhaust pollution. factory exhaust pollution. N_2 emission.

The catalytic converter is used to reduce automobile exhaust pollution. It does this by converting harmful gases from the car's engine into less harmful substances. Here's a step-by-step explanation:

1. The harmful gases produced by a car's engine include carbon monoxide (CO), nitrogen oxides (NOx), and hydrocarbons (HC). These gases are harmful to humans and the environment.

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

3. The catalysts trigger chemical reactions that convert the harmful gases into less harmful substances. For example, carbon monoxide and hydrocarbons are converted into carbon dioxide (CO2) and water (H2O), and nitrogen oxides are converted into nitrogen (N2) and oxygen (O2).

4. The less harmful substances are then released from the car's exhaust system into the air.

So, while the catalytic converter does not reduce CO2 or N2 emissions (in fact, it produces these gases as part of the conversion process), it does significantly reduce the emission of harmful gases like CO, NOx, and HC, thereby reducing automobile exhaust pollution.