Classical smog is also known as sulfurous smog or London smog. Sulfurous smog, which 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 London smog or classical smog?
Sulfurous smog is also called “London smog,” (first formed in London). Sulfurous 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 (Coal was the mains source of power in London during nineteenth century.
What is a classical smog?
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.
Why is classical smog called London smog?
From the words smoke and fog, the term is derived. The smog which is formed due to high concentration of sulphur dioxide and particulate matter which are generated due to fuel combustion, this type of smog is known as classical smog, also known as London smog or Sulphurous smog, is formed.
What is classical smog Class 11?
Classical smog consists of smoke, fog, and Sulphur dioxide components and is mostly found in humid conditions. They are generally present where there is a high concentration of particulate matter and Sulphur dioxide is produced due to the combustion of fuels.
How classical smog is formed?
Solution : Smog is formed from smoke and fog. Classical smog occurs in cool humid climate. It is a mixture of smoke, fog and sulphur dioxide. Chemically It is a reducing mixture in nature.
What causes classical smog?
Option A: Classical smog has smoke, fog and sulphur dioxide components and is found in humid conditions. They are present where there is a high concentration of particulate matter and sulphur dioxide is produced because of combustion of fuels.
Is classical smog good?
(d)- Classical smog is good for health but not photochemical smog. Hint:Air Pollutants can be solid particles, liquid droplets, or gases. They can be natural or manmade. Smog is a harmful mixture of particulates and gases that is the result of urban air pollution.
What are the types of smog?
At least two distinct types of smog are recognized: sulfurous smog and photochemical smog.
What is difference between classical smog and photochemical smog?
How is classical smog different from photochemical smog?
| Classical smog | Photochemical smog | |
|---|---|---|
| Occurrence | It occurs in a cool, humid climate. | It occurs in a dry, sunny climate. |
What gas causes London smog?
According to the UK’s Met Office, the following pollutants were emitted each day during the smoggy period: 1,000 tonnes of smoke particles, 140 tonnes of hydrochloric acid, 14 tonnes of fluorine compounds and 370 tonnes of sulphur dioxide which may have been converted to 800 tonnes of sulphuric acid.
What is the other name of classical smog?
reducing smog
Classical smog is mixture of smoke, fog and sulphur dioxide. Chemically it is a reducing mixture. It is also known as reducing smog.
How is smog formed in London?
The Great Smog of ’52 was a severe air-pollution event that affected London during December 1952. A period of cold weather, combined with an anticyclone and windless conditions, collected airborne pollutants mostly from the use of coal to form a thick layer of smog over the city.
What is smog name two types of smog Class 11?
Smog – 2 Types
- Photochemical Smog (Also called Los Angeles Smog)
- Sulfurous smog (Also called London Smog)
Is classical smog oxidising?
Assertion :Classical smog is oxidising smog whereas photochemical smog is reducing smog. Reason: Classical smog occurs in warm, dru and sunny climate whereas photochemical smog occurs in cool humid climate.
What are 3 sources of smog?
Types of Sources
mobile sources – such as cars, buses, planes, trucks, and trains. stationary sources – such as power plants, oil refineries, industrial facilities, and factories. area sources – such as agricultural areas, cities, and wood burning fireplaces.
What are the major features of the classical London smog?
Great Smog of London, lethal smog that covered the city of London for five days (December 5–9) in 1952, caused by a combination of industrial pollution and high-pressure weather conditions. This combination of smoke and fog brought the city to a near standstill and resulted in thousands of deaths.
What is true about classical smog?
Classical smog is the smog that occurs in cold and humid climate and it contains compounds like sulphur dioxide, particulate matter that are compounds of reducing nature.
Is Pan pollutant a classical smog?
Excessive SO2 emission from coal burning and industrial emission were the primary pollutants in classical smog whereas, photochemical smog refers to the peroxyacyl nitrate (PAN) formation.
What are 2 main causes of smog?
The main causes of smog
Smog is formed by mixing air with pollutants and exhaust gases resulting from human activities. The factors which are responsible for this include factories, an increasing number of cars, burning coal, wood and other solid fuels in stoves.
What are the components of classical smog?
Its components are PAN, acrolein, ozone, formaldehyde, nitric oxide.