Geography
Air pollution is the contamination of air by pollutants. In this context answer the following:
How does the use of automobiles cause air pollution?
Answer
Vehicles are mainly responsible for more than 80% of total air pollution. The major pollutants released from automobiles, locomotives, aircraft etc., include carbon monoxide, unburnt hydrocarbons and nitrogen monoxide. In the major metropolitan cities like Delhi, Mumbai and Kolkata, vehicular exhaust accounts for 75% of all CO, 45% of all hydrocarbons, 40% of all oxides and 30% of all suspended particulate matter.
Air pollution is also caused by the gaseous and volatile hydrocarbons such as methane, acetylene and ethylene. Some hydrocarbons like ethylene, which undergo chemical reactions in the presence of sunlight and nitrogen oxide form photochemical oxidants that are harmful. Fuel combustion in automobiles also produces nitrogen dioxide.
Related Questions
With reference to noise pollution, answer the following:
How do the airplanes cause noise pollution? Why is there more noise pollution during landing as compared to during take-off?
Air pollution is the contamination of air by pollutants. In this context answer the following:
Based on their origin, how can air pollutants be classified?
Air pollution is the contamination of air by pollutants. In this context answer the following:
How do industries pollute the air?
Air pollution is the contamination of air by pollutants. In this context answer the following:
Mention any three air pollutants and two sources of each.