Table of Contents
What is photochemical smog how is it formed and why is it harmful?
Photochemical smog is formed when sunlight interacts with certain chemicals in the atmosphere. Ozone is the main component in this type of air pollution. Ozone in the stratosphere protects us against harmful ultraviolet radiation, but on the ground, it is hazardous to human health.
How is photochemical smog formed what kinds of harm does it cause?
What kinds of harm does it cause? Photochemical smog is formed when hydrocarbons, nitrogen oxides, and other pollutants react in the presence of the sun. The ozone in the photochemical smog can irritate breathing passages, harm plants, and damage some plastics.
How is smog formed list its harmful effects?
Smog is produced by a set of complex photochemical reactions involving volatile organic compounds (VOCs), nitrogen oxides and sunlight, which form ground-level ozone. 8 As traffic and other sources add more pollutants to the air, the smog gets worse.
What is the other name of photochemical smog?
Photochemical smog, which is also known as “Los Angeles smog,” occurs most prominently in urban areas that have large numbers of automobiles. It requires neither smoke nor fog. This type of smog has its origin in the nitrogen oxides and hydrocarbon vapours emitted by automobiles…
Which of the following is not present in photochemical smog?
Among the given chlorofluorocarbons are the compounds that are responsible for ozone depletion which degrades ozone into molecular oxygen. It is not a component of photochemical smog.
What is impact of smog on human life?
Smog can irritate your eyes, nose and throat. Or it can worsen existing heart and lung problems or perhaps cause lung cancer with regular long-term exposure. It also results in early death. Studies on ozone show that once it gets into your lungs, it can continue to cause damage even when you feel fine.
How can you protect yourself from indoor air pollution?
How to cut down your risk
- Avoid smoking indoors (but quitting smoking is the best answer for overall health).
- Use craft supplies in well-ventilated areas.
- Make sure your gas stove is well-ventilated.
- Minimize clutter.
- Remove carpeting if possible.
- Use a dehumidifier and/or air conditioner to reduce moisture.
How can photochemical smog can be controlled?
(i) The most straight forward way is to minimize the release of oxides of nitrogen and hydrocarbons to the atmosphere. Usually catalytic converters are used in automobiles which convert harmful gases into harmless gases and thus prevent the release of nitrogen oxide and hydrocarbons to the atmosphere.
Which is the major photochemical smog?
Ground-level ozone constitutes one of the major components of photochemical smog, so called because of the photochemical reaction of air pollutants such as nitrogen oxides (NOx) and volatile organic compounds (VOCs) with ultraviolet light (sunlight); thus, the O3 levels vary strongly with season and the highest levels …
Which of the following is a part of photochemical smog?
The major undesirable components of photochemical smog are nitrogen dioxide (NO2), ozone (O3), PAN (peroxyacetylnitrate), and chemical compounds that contain the –CHO group (aldehydes). PAN and aldehydes can cause eye irritation and plant damage if their concentrations are sufficiently high.