The most dangerous pollutant in vehicular emissions is carbon monoxide (CO). It is a colorless, odorless gas that is produced when gasoline is burned in an engine. CO binds to hemoglobin in the blood, preventing it from carrying oxygen to the body’s tissues. This can lead to a number of health problems, including headaches, dizziness, nausea, and even death.
Sulfur dioxide (SO2) is a gas that is produced when sulfur-containing fuels, such as coal and oil, are burned. SO2 can cause respiratory problems, such as asthma and bronchitis. It can also damage plants and crops.
Carbon dioxide (CO2) is a gas that is produced when any fuel is burned. CO2 is not as harmful as CO or SO2, but it is a greenhouse gas that contributes to climate change.
Oxygen (O2) is not a pollutant. It is a gas that is essential for life.
In conclusion, the most dangerous pollutant in vehicular emissions is carbon monoxide (CO). It is a colorless, odorless gas that is produced when gasoline is burned in an engine. CO binds to hemoglobin in the blood, preventing it from carrying oxygen to the body’s tissues. This can lead to a number of health problems, including headaches, dizziness, nausea, and even death.