ACID RAIN
Keywords: Fossil Fuel, Nitrogen oxides, Sulphur oxides, PH Of Water
DESCRIPTION: Acid gases are produced when fossil fuels like coal and oil are burned in power stations, factories and in our own homes. These gases react with water vapours present in atmosphere and lowered the pH of water and making it acidic. When they converted into clouds it can cause rain & that rain is known as Acid Rain. Acid rain causes extensive damage to buildings, statues, bridges, and structural materials of marble, lime stone, etc. The sulphur dioxide and nitrogen oxide gases causes respiratory diseases like asthma, chronic bronchitis, etc. Acid rain can also occur in the form of snow, fog. Acid fog has 10 times more acid than acid rain. Burning of fossil fuels emits sulphur dioxide. Sulphur dioxide reaches the atmosphere, it oxidizes to form sulphur tri oxide. The sulphur tri oxide joins with hydrogen atoms in the air and becomes sulphuric acid. This then falls back down to earth as "acid”.