The various sources which produce air pollution (i.e., atmospheric pollution) given below:
(i). Burning of coal, wood. and oils. When coal, wood and oils are burnt, black smoke is produced. This smoke contain poisonous gases like CO and SO2. Oils impurity. So, when is burnt, sulphur of the coal burns from SO2. Oils also contains some sulphur compounds which produce SO2 on burning. CO, SO2 on burning, CO, SO2 and unburnt carbon particles, produced as above,go above, go into the air and make polluted.
(i). Gases released by the internal combustion engines of cars, buses, tricks, aeroplanes etc. The smoke obtained by the incomplete combustion of petrol,used in the internal combustion engines of cars,buses 🚌, trucks etc. [The engines used in these moter vahicles are called internal combustion engines because the petrol (also called gasoline) which is used as a fuel, is burnt inside the engine 🚂🚂 and not separately contains CO, NO,NO2, unburnt carbon particles, some lead compounds, some alcohol and acids. All these substances are poisonous and hence pollute air.
Now let us see how these pollutions are produced in an engine of car. Petrol is used as a fuel ⛽ in car 🚗 engine. The main components of petrol are hydrocarbon. These hydrocarbon have the general formula, C8H18 and hence are called octances. Petrol burns very fast in-car engine. Due to short time available for burning, incomplete combustion of petrol take place and some CO umbunt carbon particles are emitted into the air and thus air is polluted.
