What Is Photochemical Smog And Where Is It Usually Found

What Is Photochemical Smog And Where Is It Usually Found?

Photochemical smog is a type of smog produced when ultraviolet light from the sun reacts with nitrogen oxides in the atmosphere. … Cities that experience this smog daily include Los Angeles Sydney Mexico City Beijing and many more.Sep 3 2018

What is photochemical smog and where does it come from?

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. VOCs are released from gasoline paints and many cleaning solvents.

Where is photochemical smog common?

Photochemical smog is most common in sunny and dry cities like Los Angeles.

What is photochemical smog and what are its effects?

Photochemical smog is formed when pollutants like hydrocarbons and nitric oxide interact with sunlight to form chemicals like NO2 Peroxyacyl nitrate (PAN) ozone acrolein and formaldehyde. … Photochemical smog leads to cracking of rubber and extensive damage to plant life.

What is photochemical smog quizlet?

– Photochemical smog is a yellow-brown haze due to nitrogen dioxide. – The presence of this gas and other pollutants can cause health problems. Formation of nitrogen oxides. – Nitrogen oxides are formed in high temperature engines and furnaces.

What is in photochemical smog?

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 photochemical smog Class 11?

Photochemical smog refers to a type of smog which is formed when the ultraviolet light from the sun reacts with nitrogen oxides present in the atmosphere. This smog can cause a lot of adverse effects on humans and other living organisms.

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What is the difference between photochemical smog and industrial smog?

It is produced when nitrogen oxides and volatile organic compounds in automobile and fossil-fueled power-plant emissions combine with oxygen in the air in direct sunlight. Whereas industrial smog casts a gray pallor over the areas it affects the nitrogen dioxide in photochemical smog creates a dingy brownish haze.

Which among the following is a common component of photochemical smog?

The common components of photochemical smog are ozone nitric oxide acrolein formaldehyde and peroxyacetyl nitrate (PAN).

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What is an example of secondary pollutant?

Examples of a secondary pollutant include ozone which is formed when hydrocarbons (HC) and nitrogen oxides (NOx) combine in the presence of sunlight NO2 which is formed as NO combines with oxygen in the air and acid rain which is formed when sulfur dioxide or nitrogen oxides react with water.

What are the effects of photochemical smog on environment?

Photochemical smog has a number of negative effects on the environment and human beings. The chemicals contained within it when combined with hydrocarbons form molecules which cause eye irritation. The atmospheric radicals interfere with the nitrogen cycle by stopping ground level ozone from being eliminated.

What is photochemical smog Wikipedia?

Photochemical smog often referred to as “summer smog” is the chemical reaction of sunlight nitrogen oxides and volatile organic compounds in the atmosphere which leaves airborne particles and ground-level ozone. Photochemical smog depends on primary pollutants as well as the formation of secondary pollutants.

Which of the following is an example of the photochemical pollutant?

Air pollution containing ozone and other reactive chemical compounds formed by the action of sunlight on nitrogen oxides and hydrocarbons especially those in automobile exhaust.

What is a smog and how is photochemical smog formed quizlet?

Photochemical smog is formed when nitrogen oxides (NOx) and volatile organic hydrocarbons react when activated by sunlight. … 3) When exposed to UV radiation from the sun some NO2 reacts with hydrocarbons to form photochemical oxidants such as ozone nitric acid aldehydes and other pollutants.

What causes photochemical smog quizlet?

Photochemical smog is caused by nitrogen oxides combing with sunlight and other pollutants. Acid rain is caused by sulfur oxides and nitrogen oxides combining with water. You just studied 13 terms!

What is industrial smog?

Both industrial smog and photochemical smog are forms of air pollution. … 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.

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What is photochemical smog Slideshare?

Photochemical Smog is an air pollution formed when photons of sunlight hit molecules of different kinds of pollutants in the atmosphere. AIR POLLUTANT Primary Air Pollutant NOx VOCs Secondary Air Pollutant Ozone(O3) PAN. Process Involving Formation Of Photochemical Smog.

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Why is photochemical smog called oxidizing smog?

Automobiles and factories emit smoke which contains hydrocarbons and nitrogen dioxide these compounds under the action of sunlight become the major component of photochemical smog. This smog contains a high concentration of oxidizing agent hence it is also known as oxidizing smog.

What does the term photochemical mean?

Definition of photochemical

1 : of relating to or resulting from the chemical action of radiant energy and especially light photochemical smog. 2 : of or relating to photochemistry photochemical studies.

Is SO2 a component of photochemical smog?

Since SO2 is a reducing agent and photochemical smog is normally con- sidered to be an oxidizing system an interaction would be expected. Atten- tion naturally is directed toward the reaction of SO2 with ozone the major oxidant in photochemical smog.

Is photochemical smog a secondary pollutant?

Secondary pollutants are pollutants which form in the atmosphere. These pollutants are not emitted directly from a source (like vehicles or power plants). … Photochemical smog is made up of various secondary pollutants like ozone peroxyacyl nitrates (PANs) and nitric acid (seen in Figure 2).

What is the difference between photochemical smog and London type smog?

Classical smog is also known as sulfurous smog or London smog.

Classical Smog vs Photochemical Smog.
London smog or Classical smog Los Angeles smog or Photochemical smog
It causes bronchitis irritation i.e. problem in the lungs. It causes irritation in the eyes.

What is another name for industrial smog?

photochemical smog

noun Meteorology. air pollution containing ozone and other reactive chemical compounds formed by the action of sunlight on nitrogen oxides and hydrocarbons especially those in automobile exhaust. Also called oxidant smog smog.

What is photochemical smog list the factors that favor the formation of photochemical smog?

Photochemical smog development factors

1-Nitrogen source and released organic combinations combining high density of this material with industrializing and transportation are important factors forming photochemical smog. These factors cause some pollution to form in atmosphere by combustion fossil fuel.

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Which is not photochemical smog component?

Hence chlorofluorocarbons are not common component of photochemical smog.

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Which of the following pollutants is the major contributor to 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.

Which of the following is not a secondary pollutant of photochemical smog?

The correct answer is Sulphur dioxide.

Is radon a secondary pollutant?

Radon perfumes noxious odors can also be considered pollutants. … Secondary – Formed when primary pollutants react or combine with one another or the basic elements.

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 are the effects of photochemical smog How can photochemical smog be controlled?

CONTROL MEASURES:

Photochemical smog is obtained from the burning of fossil fuels and automobile fuels that emit NO2 and hydrocarbons which in turn form ozone PAN and other chemicals. To prevent the release of NO2 and hydrocarbons into the atmosphere the use of catalytic converters in automobiles is recommended.

What is smog classify the different type of smog found in nature?

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 photochemical smog discuss different 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). 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.

What is smog quizlet?

-Smog: a poisonous mixture of smoke aire and other pollutants. -need: emissions warmth/sunlight and no air movement.

How is smog formed quizlet?

Smog forms when sunlight nitrogen oxides and volatile organic compounds are present. The secondary pollutant ozone is a major component of photochemical smog. Sulfur is the dominate ingredient in sulfurous smog. Smog impairs respiratory function in human beings.

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