Quick Answer: Is CFC A Secondary Pollutant?

What are three secondary pollutants?

Secondary pollutantOzone (O3)Sulfuric acid and nitric acid (component of acid rain)Particulate matter.Nitrogen dioxide (NO2)Peroxyacyl nitrates (PANs)and more..

What is the difference between primary and secondary?

Primary sources can be described as those sources that are closest to the origin of the information. … Secondary sources often use generalizations, analysis, interpretation, and synthesis of primary sources. Examples of secondary sources include textbooks, articles, and reference books.

Does ozone act as a greenhouse gas?

Ozone is technically a greenhouse gas, but ozone is helpful or harmful depending on where it is found in the earth’s atmosphere. … The protective benefit of stratospheric ozone outweighs its contribution to the greenhouse effect and to global warming.

Which is the most abundantly found greenhouse gas?

Water vaporWater vapor is the most abundant greenhouse gas in the atmosphere. The increase in water vapor concentrations may be the result of climate feedbacks that are related to the warming of the atmosphere. As the temperature rises, more water is evaporated from ground sources, such as rivers, lakes, and oceans.

Which 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.

Is aerosol a secondary pollutant?

Secondary pollutants may be either gaseous, or particulate aerosols. … Aerosol pollutants may be formed within the atmosphere as a result of gas-phase reactions followed by condensation of the products, or by reactions taking place in the existing atmospheric aerosol phase.

Do CFCs cause global warming?

CFCs are already known to deplete ozone, but in-depth statistical analysis now shows that CFCs are also the key driver in global climate change, rather than carbon dioxide (CO2) emissions. … “In fact, the data shows that CFCs conspiring with cosmic rays caused both the polar ozone hole and global warming.”

Is smoke a secondary pollutant?

This kind of visible air pollution is composed of nitrogen oxides, sulphur oxides, ozone, smoke and other particulates. … Primary pollutants are emitted directly from a source, such as emissions of sulfur dioxide from coal combustion.

Which is more harmful primary or secondary pollutants?

2) Which are more harmful primary or secondary pollutants? Ans- They emit carbon monoxide which is one of the biggest contributors (by weight) to air pollution. Though these statistics are horrifying, secondary pollutants can be more harmful and severe to human health than primary pollutants.

What are the sources of primary and secondary pollutants?

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.

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).

Why is ozone not a greenhouse gas?

Ozone isn’t a typical greenhouse gas. It has two distinct functions in the atmosphere. High in the stratosphere, it absorbs ultraviolet light from the sun and protects the earth. Near the ground, it serves as a pollutant and contributor to smog and also has greenhouse characteristics.

Is DDT a secondary pollutant?

It includes the DDT. The secondary pollutants are those which are not able to maintain their form in the environment. It includes the peroxyacyl nitrate which is formed due to the reaction between the primary pollutants like the hydrocarbons and nitrogen oxides. … It includes the DDT, fungicides etc.

What are primary and secondary air pollutants with examples?

Primary air pollutants: Pollutants that are formed and emitted directly from particular sources. Examples are particulates, carbon monoxide, nitrogen oxide, and sulfur oxide. Secondary air pollutants: Pollutants that are formed in the lower atmosphere by chemical reactions.

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

Primary pollutants are directly generated from human activities like from car, from ships, from construction work etc. … Secondary pollutants form due to mixing of primary pollutants and natural resources such as water, air etc. They are harmful like mixing of sulphuric acid susoended in air with rain to form acid rain .

What is the most dangerous pollutant?

RadonWe see Radon as the most dangerous indoor air pollutant in the western world nowadays. This is because of several reasons: Radon is the number one cause of lung cancer among non-smokers….Developed countriesParticulate Matter (PM2. 5, PM10)Ground Level Ozone (O3)Nitrogen Dioxide (NO2)Indoor Radon (Rn)