Physics
Grade-10
Easy
Question
The major source of acid rain pollution is
- Exhaust from cars
- Nuclear reactors
- Burning of coal in power plants
- The sun
Hint:
- Acid rain means the precipitation of acidic components such as Sulfuric or Nitric acid. Sulfur dioxide and oxides of nitrogen get into the upper atmosphere by wind or air currents and get mixed with water.
- The SO2 and NOX react with water, oxygen and other chemicals to form sulfuric and nitric acids. Normal rain has a pH value of 5.6. It is slightly acidic due to the presence of carbon dioxide which gets dissolved into the water forming weak carbonic acid.
- However, acid rain usually has a pH between 4.2 and 4.4 because of the large quantity of acids. The major sources of sulphuric dioxide and oxides of nitrogen are the burning of fossil fuels, emission from vehicles, oil refineries, etc.
The correct answer is: Burning of coal in power plants
Power plants release the majority of sulfur dioxide and much of the nitrogen oxides when they burn fossil fuels, such as coal, to produce electricity. In addition
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