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 most common type of smog?
Today, most of the smog we see is
photochemical smog
. Photochemical smog is produced when sunlight reacts with nitrogen oxides and at least one volatile organic compound (VOC) in the atmosphere. Nitrogen oxides come from car exhaust, coal power plants, and factory emissions.
What is London smog and photochemical smog?
The word smog is combination of smoke and fog. At least two distinct types of smog are recognized: Classical smog and photochemical smog. Classical smog is also known as
sulfurous smog
or London smog. … As the reaction take place in the presence of light to form the smog, it is called photochemical smog.
What is the difference between smog and photochemical smog?
Sulfurous smog, also known as London smog, develops due to high concentration of sulfur oxides in the air. … Photochemical smog is produced
when sunlight reacts with oxides of nitrogen
and at least one volatile organic compound (VOC) in the atmosphere.
What is photochemical smog and classical smog?
classical smog – This is the typical form of smog found in areas which have a humid climate. It is a
mixture of smoke, fog and sulphur dioxide
. … Photochemical smog – This type of smog is prevalent in dry and sunny areas of the world.
What are the three types of smog?
At least two distinct types of smog are recognized: 1) Sulfurous smog (or ‘London-type’ smog); 2)
Photochemical smog
(‘Los Angeles-type’ smog).
Why is smog bad?
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.
What type of smog is harmful?
Smog is a serious problem in many cities and continues to harm human health.
Ground-level ozone, sulfur dioxide, nitrogen dioxide and carbon monoxide
are especially harmful for senior citizens, children, and people with heart and lung conditions such as emphysema, bronchitis, and asthma.
What is the difference between smoke and smog?
| Fog Smog | Fog is caused by water droplets in the air Smog is made up of Smoke and Fog |
|---|
Who had coined the term of smog?
London, England,
physician Harold Des Veaux
coined the word smog in 1905 to describe natural fog contaminated by smoke: smoke + fog yielded smog.
How does smog pollute the air?
Ground level ozone is created when sunlight reacts with certain chemicals that come from sources of burning fossil fuels, such as factories or car exhaust.
When particles in the air combine with ozone
, they create smog. Smog is a type of air pollution that looks like smoky fog and makes it difficult to see.
What are the main components of smog?
Smog, formed mainly above urban centres, is composed mainly of
tropospheric ozone (O
3
); primary particulate matter such as pollen and dust
; and secondary particulate matter such as sulphur oxides, volatile organic compounds, nitrogen oxides (NO
x
) and ammonia gas.
Where is industrial smog most common?
Industrial smog typically exists in
urban areas where factories burn fossil fuels such as coal
, which creates smoke and sulfur dioxide that mix with fog droplets to create a thick blanket of haze close to the ground.
Is classical smog oxidising in nature?
Classical smog is a mixture of smoke and fog. …
Photochemical smog is oxidising in nature
. And London smog is reducing in nature. Thus, the statement ‘London smog is oxidising in nature’ is false.
What is the difference between classical smog and photochemical smog Class 11?
| Classical smog Photo chemical 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. |
|---|
Is classical smog good for health?
character. (c)- During formation of smog, the level of ozone in the atmosphere goes down. (d)-
Classical smog is good for health
but not photochemical smog. … Smog is a harmful mixture of particulates and gases that is the result of urban air pollution.
