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Which one of the following air pollutants are responsible for photochemical smog?
  • a)
    Nitrogen
  • b)
    Ozone
  • c)
    Unburnt hydrocarbons
  • d)
    Carbon monoxide
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
Which one of the following air pollutants are responsible for photoche...
Photochemical smog is the chemical reaction of sunlight, nitrogen oxides and volatile organic compounds in the atmosphere, which leaves airborne particles and ground-level ozone.
Photochemical smog depends on primary pollutants as well as the formation of secondary pollutants.
These primary pollutants include oxides of nitrogen, particularly nitric oxide (NO) and nitrogen dioxide (NO2), and volatile organic compounds.
The relevant secondary pollutants include peroxyl-acyl nitrates (PAN), tropospheric ozone, and aldehydes.
An important secondary pollutant for photochemical smog is ozone, which is formed when hydrocarbons (HC) and nitrogen oxides (NOx) combine in the presence of sunlight.
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Which one of the following air pollutants are responsible for photoche...
Photochemical Smog and its Causes

Photochemical Smog

Photochemical smog is a type of air pollution that is caused by the interaction of sunlight with certain chemicals in the air. It is characterized by a brownish-yellow haze and can cause a variety of health problems for people who are exposed to it.

Causes of Photochemical Smog

Photochemical smog is caused by a complex series of chemical reactions that occur when pollutants are released into the air. Some of the main pollutants that are responsible for photochemical smog include:

- Nitrogen oxides (NOx)
- Volatile organic compounds (VOCs)
- Ozone (O3)

Ozone as a Cause of Photochemical Smog

Ozone is one of the key pollutants that is responsible for the formation of photochemical smog. When nitrogen oxides and volatile organic compounds are released into the air, they react with sunlight to create ozone. Ozone is a highly reactive gas that can cause a variety of health problems, including respiratory issues and chest pain.

In addition to being a key component of photochemical smog, ozone is also a greenhouse gas that contributes to climate change. It is important to take steps to reduce the amount of ozone that is released into the air in order to mitigate the impacts of both photochemical smog and climate change.
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Which one of the following air pollutants are responsible for photochemical smog?a)Nitrogenb)Ozonec)Unburnt hydrocarbonsd)Carbon monoxideCorrect answer is option 'B'. Can you explain this answer?
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