Question

Which of the following pollutant is released in larger quantity from the exhaust emission of a petrol/diesel automobile?

• A. CO
• B. CO${}_2$
• C. Hydrocarbons, NO${}_2$, SO${}_2$ and Pb
• D. None of the above

Answer 1

The correct option is C Hydrocarbons, NO${}_2$, SO${}_2$ and Pb

Emission from vehicles especially automobiles is responsible for about two third of air pollution in the urban area. The major pollutants emitted by motor vehicles including CO, NOx, sulphur oxides, (SO), hydrocarbons (HC), lead (Pb) and suspended particulate matter (SPM), have damaging effects on both human health and ecology. The internal combustion engines need a mixture of air and fuel to burn and produce energy to propel the vehicle. These burnt gases, which come out of the exhaust are responsible for pollution.