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 are the 3 types of smog?
Classical (‘London-type’)
smog. 3. Photochemical (‘Los Angeles-type’) smog. 4.
What is difference between sulphurous 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 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 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 type of smog is harmful?
Smog is a problem in a number of cities and continues to harm human health.
Ground-level ozone, sulfur dioxide, nitrogen dioxide carbon monoxide
are especially harmful for senior citizens, children, and people with heart and lung conditions such as emphysema, bronchitis, and asthma.
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.
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 is another name for 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…
How can smog affect humans?
When inhaled,
smog irritates our airways
, increasing our risk of serious heart and lung diseases. These health risks are why many cities monitor smog levels. On a high ozone-alert day, for example, your eyes and throat may burn, and you may cough and wheeze.
Where is smog most common?
Smog is common in
big cities
with a lot of industry and traffic. Cities located in basins surrounded by mountains may have smog problems because the smog is trapped in the valley and cannot be carried away by wind.
Which of the following diseases are caused by smog?
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
.
Who has coined the term smog?
London, England,
physician Harold Des Veaux
coined the word smog in 1905 to describe natural fog contaminated by smoke: smoke + fog yielded smog.
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.
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.
Which of the following is the major photochemical smog?
7. Which of the following pollutants is the major contributor to photochemical smog? Explanation:
Ozone
is the major constituent of photo-chemical smog.
