What type of pollution is particulate matter?
What type of pollution is particulate matter?
“Particulate matter,” also known as particle pollution or PM, is a complex mixture of extremely small particles and liquid droplets. Particle pollution is made up of a number of components, including acids (such as nitrates and sulfates), organic chemicals, metals, and soil or dust particles.
Which of the following is a particulate pollutant?
A particulate pollutant is a microscopic or microscopic liquid and solid particles present in the form of the suspension in the air. Particulate matter can be released from different types of human activities such as vehicle emissions, smoke particles, dust particles, and ash from industries.
What are 4 sources of particulate matter?
Particulate Matter (PM) Sources. Components of particulate matter (PM) include finely divided solids or liquids such as dust, fly ash, soot, smoke, aerosols, fumes, mists and condensing vapors that can be suspended in the air for extended periods of time.
Are particulates primary or secondary pollutants?
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.
What are examples of primary and secondary pollutants?
Secondary pollutant form when primary pollutants emitted directly from a combustion process react in the atmosphere. Primary pollutants include ammonia, sulfur dioxide, nitrogen dioxide and carbon monoxide. Secondary pollutants include ground-level ozone, acid rain and nutrient enrichment compounds.
What are secondary pollutants give examples?
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.
Which of the following is a secondary pollutant?
Solution : Ozone (O3) is secondary pollutants which is formed by the interaction of primary air pollutants.
What is a secondary pollution?
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 so3 a secondary pollutant?
Keeping this in view, is so3 a pollutant? Sulfur trioxide (alternative spelling sulphur trioxide) is the chemical compound with the formula SO3, with a relatively narrow liquid range. In the gaseous form, this species is a significant pollutant, being the primary agent in acid rain.
Is so3 a pollutant?
Health and Environmental Effects Sulfur trioxide is an air pollutant that affects the lungs and makes it hard to breath. Sulfur oxides, both SO2 and SO3, are constituents of acid rain.
Which of the following is not a secondary air pollution?
Which of the following is not a secondary air pollutant ?
| 1) | Photochemical smog |
|---|---|
| 2) | Ozone |
| 3) | All (, ( & ( |
| 4) | Sulphur dioxide |
| 5) | NULL |
How does air pollution affect buildings?
The materials most sensitive to pollutants are calcareous building stones and ferrous metals. Manifestations of damage include losses of mass, changes in porosity, discoloration and embrittlement. Such work is also of interest in predicting the potential effects of climatic changes on materials.
Which of the following is an important activity in the prevention of pollution?
Answer. Answer: stubble burning is an important activity in the prevention of pollution.
Which of the following is the major photochemical smog?
The major undesirable components of photochemical smog are nitrogen dioxide (NO2), ozone (O3), PAN (peroxyacetylnitrate), and chemical compounds that contain the –CHO group (aldehydes).
Which gas is responsible for photochemical smog?
nitrogen oxides
What is photochemical smog give example?
Photochemical smog is a type of smog produced when ultraviolet light from the sun reacts with nitrogen oxides in the atmosphere. It is visible as a brown haze, and is most prominent during the morning and afternoon, especially in densely populated, warm cities.
What is an example of photochemical smog?
Products like ozone, aldehydes, and peroxyacetyl nitrates are called secondary pollutants. The mixture of these primary and secondary pollutants forms photochemical smog. These oxidizing compounds have been linked to a variety of negative health outcomes; ozone, for example, is known to irritate the lungs.
What is the chemical reaction of photochemical smog?
Photochemical smog is a type of air pollution due to the reaction of solar radiation with airborne pollutant mixtures of nitrogen oxides (NOx) and volatile organic compounds (hydrocarbons).
Which of the following causes the photochemical smog?
Photochemical smog happens when nitrogen oxides and volatile organic compounds react together in the presence of sunlight as a catalyst and form ozone at lower levels. The nitrogen oxides come from vehicle exhausts, and volatile organic compounds come from many chemicals, such as paint and cleaning agents.
Is CO present in photochemical smog?
Carbon monoxide accelerates the reaction as measured by nitric oxide oxidation or ozone formation. This finding has relevance to photochemical smog formation.
Which of the following species does not contribute to photochemical smog?
Among the given chlorofluorocarbons are the compounds that are responsible for ozone depletion which degrades ozone into molecular oxygen. It is not a component of photochemical smog.
What are the 5 main air pollutants?
5 Major Outdoor Air Pollutants
- Ozone (O3)
- Nitrogen Oxides (NOx)
- Carbon Monoxide (CO)
- Sulfur Dioxide (SO2)
- Particulate Matter (PM10 and PM2.5)
What are two major sources of air pollution?
The Sources Most air toxics originate from human-made sources, including mobile sources (e.g., cars, trucks, buses) and stationary sources (e.g., factories, refineries, power plants), as well as indoor sources (e.g., building materials and activities such as cleaning).
What is the most dangerous pollutant?
Top of the POPs: The world’s most dangerous pollutants
- Dichlorodiphenyltrichloroethane (DDT)
- Polychlorinated biphenyls (PCBs)
- Hexochlorobenzene (HCB)
- Hexachlorocyclohexane.
- Hexabromocyclododecane (HBCD)