Classical smog is formed when there is high concentration of sulphur dioxide and particulate matter produced due to combustion of fuels. It occurs in cold and humid climate. It is also known as London smog or Sulphurous smog and causes dark brownish colour of atmosphere.Moreover, what is smog How is classical?
Smog is a type of air pollution. Classical smog occurs in a cool, humid climate. Its components include smoke, fog and sulphur dioxide. It is reducing in nature. Photochemical smog occurs in a dry, sunny climate.
Secondly, what is classical and photochemical smog? Distinguish between classical smog and photochemical smog. Classical smog is a mixture of sulfur dioxide and coal smoke with fog. Photo chemical smoke is a precipitate in the reaction of the nitrogen oxide and other chemical compounds in Sunlight.
Also Know, how is smog formed?
The atmospheric pollutants or gases that form smog are released in the air when fuels are burnt. When sunlight and its heat react with these gases and fine particles in the atmosphere, smog is formed. It is purely caused by air pollution.
What is photochemical smog and how is it formed?
Photochemical smog is a mixture of pollutants that are formed when nitrogen oxides and volatile organic compounds (VOCs) react to sunlight, creating a brown haze above cities. It tends to occur more often in summer, because that is when we have the most sunlight. Primary pollutants.
What is smog made up of?
This kind of visible air pollution is composed of nitrogen oxides, sulphur oxides, ozone, smoke and other particulates. Man-made smog is derived from coal combustion emissions, vehicular emissions, industrial emissions, forest and agricultural fires and photochemical reactions of these emissions.Why is classical smog reducing?
Photochemical smog is an oxidizing smoke formed by the action of sunlight on oxides of nitrogen and hydrocarbons. While classical smog is a reducing smog built by oxides of sulphur and particulate matter.How is photochemical smog controlled?
Smog also causes corrosion of metals, stones and building materials. Control of Photochemical Smog Many techniques are used to control or reduce the formation of photochemical smog. (i) The most straight forward way is to minimize the release of oxides of nitrogen and hydrocarbons to the atmosphere.What are the different types of smog?
At least two distinct types of smog are recognized: sulfurous smog and photochemical smog. Sulfurous smog, which is also called “London smog,” results from a high concentration of sulfur oxides in the air and is caused by the use of sulfur-bearing fossil fuels, particularly coal.What is the main component of smog?
Smog is made up of many chemicals including nitrogen oxides (NOx), sulphur dioxide (SOx), carbon monoxide (CO), and volatile organic compounds (VOCs), but the two main components of smog are particulate matter (PM) and ground-level ozone (O3).What are the harmful effects of photochemical smog?
The other major components of photochemical smog are PAN, acrolein, and formaldehyde. Both PAN and ozone are eye irritants, while nitric oxide (formed from NO2) causes nose and throat irritation. At higher concentrations, photochemical smog causes chest pain, headaches, throat dryness, and various respiratory ailments.What is smog explain?
Smog. Smog is a kind of air pollution, originally named for the mixture of smoke and fog in the air. Classic smog results from large amounts of coal burning in an area and is caused by a mixture of smoke and sulfur dioxide. Smog is a problem in a number of cities and continues to harm human health.What is oxidising smog?
Photochemical smog is also sometimes known as "oxidizing smog", in that it has a high concentration of oxidizing agents. Ozone is a common oxidizing agent found in photochemical smog. Another type of smog, "reducing smog", has high concentrations of sulfur dioxide, which is a reducing agent.Why is smog bad?
Smog can cause or aggravate health problems such as asthma, emphysema, chronic bronchitis and other respiratory problems as well as eye irritation and reduced resistance to colds and lung infections. The ozone in smog also inhibits plant growth and can cause widespread damage to crops and forests.How is smog measured?
Smog is an example of air pollution that is visible to the naked eye. There are standardized measures that have been created, such as the air quality index, also called the pollution standards index. The air quality index allows for the comparison of pollution levels in different cities.Why is smog harmful?
Overall, smog is harmful to both the respiratory (lungs) and cardiovascular (heart) systems. It aggravates heart problems, bronchitis, asthma, and other lung problems. Smog reduces lung function even in healthy people. Even at low levels, ground level ozone and fine particulate matter are harmful.What creates photochemical smog?
Conditions of Photochemical Smog Formation Photochemical smog happens when nitrogen oxides and volatile organic compounds react together in the presence of sunlight as a catalyst and form ozone at lower levels.Where is photochemical smog common?
Photochemical smog is most common in sunny and dry cities, like Los Angeles.Where does photochemical smog occur?
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…What is smog Class 9?
What is smog? Answer: The suspended particles like unburnt carbon particles and hydrocarbons mix with smoke and fog in the atmosphere, especially in the cold weather to form smog which results in a lowered visibility. 1 Like.Is smog the same as ozone?
Ozone at ground level is a harmful air pollutant. Are ozone and smog the same thing? While the two terms are often used interchangeably for general use, smog is more complex. Smog is primarily made up of ground level ozone combined with other gases and particle pollution.How is smog formed how does it affect human health?
In present time's smog are caused due to vehicular emission, industrial fumes which react in atmosphere along with sunlight to form photochemical smog. The air pollutants from smog cause serious problems to senior citizens, children and people with heart and lung problems leading to emphysema, bronchitis, asthma. 
