Which of the following is secondary pollutant?
Show Hint
Secondary pollutants are not directly emitted from a source, such as power plants or vehicles.
CO
SO2
O3
CO2
The Correct Option is C
Solution and Explanation
Secondary pollutants are the type of pollutants formed in the atmosphere. These pollutants are not directly emitted from a source, such as power plants or vehicles.
- Primary pollutants are directly emitted from their sources. For example - CO, CO2, and SO2 are primary pollutants as they are directly emitted from the burning of fossil fuels.
- Pollutants that are formed by reaction amongst the primary pollutants are called secondary pollutants. For example, ozone is a secondary pollutant.
Therefore, the correct answer is O3
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Concepts Used:
Environmental Pollution
When there is an unpleasant change in the surrounding that has harmful effects on plants and animals, it leads to environmental pollution. Pollution is the root cause of a substance - “pollutant”. We can have pollutants in solid, liquid, or gaseous forms. A substance becomes a pollutant when its concentration is greater than the natural abundance and this increase in concentration is either because of human activities or natural phenomena.
Effects of Environmental Pollution:
Some pollutants are scraped into the soil by human beings. This leads to air, water, and soil pollution. If the soil is polluted, the helpful or functional microorganisms in it will die and the fertility of the soil will vanish. The production of crops will diminish. If the soil is not fertile; it will have a harmful consequence on human society.