What is a secondary pollutant?

What is a 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. Source: GreenFacts.

What are secondary air pollutants? Secondary pollutants are the air pollutants that are not directly emitted. They are formed when other pollutants (primary pollutants) react in the atmosphere and make them harmful. Carbon monoxide (CO) is formed as a result of the incomplete combustion of organic matter and released directly in the atmosphere.

What are examples of primary and secondary pollutants? Examples of primary pollutants include sulfur dioxide (SO2), carbon monoxide (CO), nitrogen oxides (NOX), and particulate matter (PM). Examples of secondary pollutants include photochemical oxidants (ozone, nitrogen dioxide, sulfur trioxide) and secondary particulate matter.

What is a secondary pollutant quizlet? What is a secondary pollutant? A secondary pollutant is when a primary pollutant comes into contact with other primary pollutants or with naturally occurring substances. An example is ground-level ozone.

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What is a secondary pollutant? – Related Questions

What are secondary pollutants Mcq?

Secondary pollutants are not emitted directly. They are formed from the combination of primary pollutants with some other compound. Examples of secondary pollutants are Ozone, Formaldehyde, PAN (peroxy acetyl nitrate) and Smog etc.

Is 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).

Is Pan a secondary pollutant?

Peroxyacetyl nitrate (PAN) and ozone are the two important secondary photochemical air pollutants found in the urban at- mosphere (1-3). Of the two, PAN is the more useful indicator of photochemical reactions in polluted air as, unlike ozone, it appears to have no large natural source (2-7).

What are the examples of secondary pollutants?

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 is difference between primary and secondary pollutants?

Primary pollutants are pollutants that are emitted from a source, directly into the atmosphere. Secondary pollutants are pollutants formed either due to a reaction between primary pollutants themselves or between a primary pollutant and any other atmospheric particle.

What’s the difference between primary and secondary?

Primary sources are firsthand, contemporary accounts of events created by individuals during that period of time or several years later (such as correspondence, diaries, memoirs and personal histories). Secondary sources often use generalizations, analysis, interpretation, and synthesis of primary sources.

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What is the defining difference between primary and secondary pollutants quizlet?

What is the difference between primary and secondary pollutants? Primary pollutants are harmful substances emitted directly into the air. Secondary pollutants are formed when primary pollutants react with one another or with the basic components of air to form new harmful pollutants.

Is methane a secondary pollutant?

The pollutants have been classified into primary and secondary categories. The major primary pollutants are Oxides of Sulphur, Oxides of Nitrogen, Oxides of Carbon, Particulate Matter, Methane, Ammonia, Chlorofluorocarbons, Toxic metals etc. The secondary pollutants are not emitted directly.

Which compound is a secondary air pollutant quizlet?

secondary air pollutants include ozone, other reactive organic compounds, and sulfuric and nitric acids.

What are secondary pollutants Sanfoundry?

What are secondary pollutants? Explanation: The pollutants produced in the atmosphere when certain chemicals reactions take place among the primary pollutants are called secondary pollutants. Some of the examples of secondary pollutants are sulphuric acid, nitric acid and carbonic acid.

Which is the major source for sulphur dioxide Mcq?

Explanation: Though emission of sulphur dioxide is peak during volcanic eruptions, its major source is during combustion of crude oil and coal for heat and power generation.

Is DDT a secondary pollutant?

Smog, photochemical smog, ozone and PAN all are secondary air pollutants. DDT is a primary soil pollutant.

Which is not secondary pollutant?

Smog is not a secondary pollutant. Smog is air pollution that reduces visibility. The term “smog” was first used in the early 1900s to describe a mix of smoke and fog. The smoke usually came from the burning of coal.

Is phenol a secondary pollutant?

Secondary air pollutants are photochemically produced from primary pollutants and are thus called photochemical oxidants. Ozone, peroxyacyl nitrates, aldehydes and phenols are produced due to photochemical reactions between nitrogen oxides and unsaturated hydrocarbons.

Why is pan a secondary pollutant?

Figure 1 shows the structure of an example of PAN. PANs are a secondary pollutant since they form in the atmosphere after the emission of primary pollutants. Sources of the pollutants required to create PANs include motor vehicles, tobacco smoke, and the burning of fossil fuels.

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Which of the following is secondary pollutant co2 no3?

Answers (3)

O3 (ozone) is a secondary pollutant. These are formed by the reaction of primary pollutant.

Is pollen a primary or secondary pollutant?

sources are the primary sources for these pollutants. particles and liquid droplets that are small enough to remain suspended in the air. pollen, etc. It also includes tiny liquid droplets of sulfuric acid, oil, and various pesticides.

Is so2 a secondary pollutant?

Like nitrogen dioxide, sulfur dioxide can create secondary pollutants once released into the air. Secondary pollutants formed with sulfur dioxide include sulfate aerosols, particulate matter, and acid rain.

Which is more harmful primary or secondary pollutants?

Secondary pollutants are more harmful than primary pollutants because the harmful gases produced by primary pollutants like carbon monoxide can result in air pollution in the atmosphere. This will result in acid rain. Secondary pollutants are of much concern as they are formed from many harmful compounds.

How primary and secondary pollutants are harmful for humans and environment?

Primary pollutants and secondary pollutants can be more dangerous. The first are those that are emitted directly from a source, which can be natural (volcanic eruptions or fires, for example) or of anthropogenic origin (carbon monoxide from vehicles). Secondary pollutants, on the other hand, are not emitted directly.

What is the difference between primary and secondary air pollutants group of answer choices?

What is the difference between primary air pollutants and secondary air pollutants? Primary are emitted directly into the air from a specific source while secondary are not emitted directly from a source but are formed in the atmosphere.

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