Which One Of The Following Is Secondary Air Pollutant?

Which of the following is not a secondary air pollution?

Which of the following is not a secondary air pollutant ?1)Photochemical smog2)Ozone3)All (, ( & (4)Sulphur dioxide5)NULL.

Is Pan a secondary air 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).

Is particulate matter a secondary pollutant?

These include windblown dust and wildfires. Secondary PM sources directly emit air contaminants into the atmosphere that form or help form PM. Hence, these pollutants are considered precursors to PM formation. These secondary pollutants include SOx, NOx, VOCs, and ammonia.

What is an example of a secondary pollutant quizlet?

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.

Why is ozone a secondary pollutant?

Ground-level ozone is a colorless and highly irritating gas that forms just above the earth’s surface. It is called a “secondary” pollutant because it is produced when two primary pollutants react in sunlight and stagnant air. These two primary pollutants are nitrogen oxides (NOx) and volatile organic compounds (VOCs).

What is the full form of pan in air pollution?

Peroxyacyl nitrates are a family of compounds which result from photochemical reactions between contami- nants released to the atmosphere by combustion of organic fuels. Peroxyacetyl nitrate (PAN) is the most abundant member of this family and is responsible for serious plant injury in some polluted areas.

What is the full form of pan in environmental science?

Abstract. Peroxyacetyl nitrate (PAN) formed in the at- mospheric oxidation of non-methane volatile organic com- pounds (NMVOCs) is the principal tropospheric reservoir for nitrogen oxide radicals (NOx = NO + NO2).

What is a secondary air 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).

Which of the following is both primary and secondary air pollutant?

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.

Is no2 a secondary pollutant?

Nitrogen dioxide and other nitrogen oxides react with other chemicals in the air to form other pollutants, known as secondary pollutants. … These secondary pollutants include ozone, particulate matter, acid rain, and other toxic chemicals.

What are examples of primary and secondary pollutants?

Primary pollutants include ammonia, sulfur dioxide, nitrogen dioxide and carbon monoxide. Secondary pollutants include ground-level ozone, acid rain and nutrient enrichment compounds.

What is a pollutant quizlet?

Pollution is the introduction of harmful materials into the environment. These harmful materials are called pollutants. … Industries and homes generate garbage and sewage that can pollute the land and water.

Which is a secondary air pollutant quizlet?

Secondary air pollutant is. carbon monoxide, nitrogen oxides, sulfur dioxide, volatile organic compounds, particulate matter.