Photochemical smog found mainly in
Photochemical smog found mainly in
- Industrial area
Marshy place
Hilly area of Himachal
Cold humid climate
The Correct Option is A
Approach Solution - 1
- Photochemical smog is a type of air pollution that forms when sunlight reacts with pollutants such as nitrogen oxides (NOx) and volatile organic compounds (VOCs), which are primarily emitted by vehicles, factories, and industrial processes.
- It is characterized by the presence of secondary pollutants like ozone (O3), peroxyacetyl nitrate (PAN), and aldehydes, which are harmful to both human health and the environment.
- Industrial areas often have higher emissions of NOx and VOCs due to:
- Combustion of fossil fuels in power plants and factories.
- Heavy vehicular traffic.
- Emissions from chemical and manufacturing processes.
Why Industrial Areas Are Prone:
Industrial areas have the necessary conditions for photochemical smog formation, including:
- High levels of precursor pollutants (NOx and VOCs).
- Strong sunlight, which triggers photochemical reactions.
- Temperature inversions, which trap pollutants close to the ground.
Conclusion:
Photochemical smog is primarily found in industrial areas due to the significant emissions of pollutants from vehicles and factories.
Approach Solution -2
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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.