Which of the following is not a primary pollutant?
Solution(By Examveda Team) Ozone is not a primary pollutant since it is formed by the photo-chemical reaction of oxygen with the UV rays and not directly discharged into the atmosphere by a source. Similarly, sulphuric acid is also not a primary pollutant.
Primary air pollutants: Pollutants that are formed and emitted directly from particular sources. Examples are particulates, carbon monoxide, nitrogen oxide, and sulfur oxide.
A primary pollutant is an air pollutant emitted directly from a source e.g., carbon monoxide (CO), oxides of nitrogen (NOx, NO), sulfur oxides (SOx), SO2, volatile organic compounds (VOCs) and particulate matter (dust, ash, salt particles).
- Ozone (O3)
- Nitrogen Oxides (NOx)
- Carbon Monoxide (CO)
- Sulfur Dioxide (SO2)
- Particulate Matter (PM10 and PM2.5)
Carbon dioxide is one of the main pollutants with regard to air pollution. It is a primary pollutant, which means it is emitted into the environment directly by human and natural sources. It is a greenhouse gas, which is the main reason for rising temperatures and global warming.
As a primary pollutant, NO2 is emitted in limited amounts through vehicles into the air. Nitrogen dioxide is also a secondary pollutant because it can be formed through oxidisation.
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.
The five primary pollutants are carbon oxides, nitrogen oxides, sulphur oxides, volatile organic compounds and suspended particulate matter.
These six pollutants are carbon monoxide, lead, nitrogen oxides, ground-level ozone, particle pollution (often referred to as particulate matter), and sulfur oxides.
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 of the following is not a pollutant?
Hydrogen is not a pollutant at all among the mentioned gases.
Rising carbon dioxide levels from burning fossil fuels have been linked to sea level changes, snowmelt, disease, heat stress, severe weather, and ocean acidification. Yet because it does not affect respiration directly, carbon dioxide is not considered a classic air pollutant.
Photochemical smog depends on primary pollutants as well as the formation of secondary pollutants. These primary pollutants include nitrogen oxides, particularly nitric oxide (NO) and nitrogen dioxide (NO2), and volatile organic compounds.
Acid deposition (aka "acid rain") occurs when primary pollutants, sulfur dioxide and nitrogen oxides, interact with atmospheric water and moisture to produce a more acidic rain than is natural.
Secondary pollutants like ozone and carbon dioxide (CO2), a greenhouse gas, come from carbon monoxide.
Nitrogen dioxide and other nitrogen oxides react with other chemicals in the air to form other pollutants, known as secondary pollutants.
Primary pollutants include sulphur dioxide, nitrogen oxides, particulate matter, carbon monoxide, lead, and volatile organic compounds. Secondary pollutants are created in the atmosphere when primary pollutants have chemical reactions with each other or other atmospheric compounds, such as water vapour.
Different types of secondary pollutants include: Ozone (O3) Sulfuric acid and nitric acid (component of acid rain)
CFC: Chlorofluorocarbons. 2. AQI: Air Quality Index. 3. PAN: Peroxyacetyl nitrate.
Peroxyacetilnitrates (PAN) is the most characteristic photoxidant of a range of secondary pollutants formed by the photochemical reaction of hydrocarbons with nitrogen oxides in the atmosphere: it is phytotoxic and shows an increasing role in human health effects due to ambient air exposure, especially in presence of ...
Which is primary air pollutants Mcq?
Air Pollution MCQ Question 8
The correct answer is Sulphur and Nitrogen.
Various types of pollution are air pollution, water pollution, noise pollution, soil pollution, etc. Space pollution is not a type of pollution.
Nitrogen is not an air pollutant as the atmospheric composition contains 78% nitrogen and 21% oxygen by proportion. Oxides of nitrogen from external sources and carbon monoxide are various exhaust gases from vehicles which are air pollutants causing damage to the atmosphere.
CO is a primary pollutant. Acid rain is a secondary pollutant. Scientists were monitoring a meteor headed toward Earth. It moved off course, but some pieces of rock entered the Earth's atmosphere.
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.
Primary pollutants are emissions that directly cause air pollution in the form in which they are released at the source. Certain primary pollutants can react with other elements or compounds, creating new chemicals that are known as secondary pollutants.
Examples of secondary pollutants include photochemical oxidants (ozone, nitrogen dioxide, sulfur trioxide) and secondary particulate matter.
Hence, we can conclude that Chlorofluorocarbon (CFC) does not use in the vehicles so it is not a vehicular pollutant.
(d) nitrogen dioxide. Carbon dioxide is considered a pollutant only when its level of concentration in the air is too high. Whereas sulphur dioxide, carbon monoxide and nitrogen dioxide are hazardous gases and are considered pollutants even at low levels of concentration.
Carbon dioxide is not a natural pollutant since 0.03% composition of carbon dioxide is present in atmospheric gasses but this gas becomes pollutant when its concentration increases in the air crossing the permissible limit and posseses various dangers to global temperature.
Why is lead a primary pollutant?
Lead can be released directly into the air, as suspended particles. Historic major sources of lead air emissions were motor vehicles and industrial sources. Motor-vehicle emissions have been reduced by the phasing out of leaded gasoline, but lead is still used in general-aviation gasoline for piston-engine aircraft.
- Water Pollution.
- Air Pollution.
- Soil Pollution.
- Thermal Pollution.
- Radioactive Pollution.
- Noise Pollution.
- Light Pollution.
These six pollutants are carbon monoxide, lead, nitrogen oxides, ground-level ozone, particle pollution (often referred to as particulate matter), and sulfur oxides.
Definition: A primary pollutant is an air pollutant emitted directly from a source. A secondary pollutant is not directly emitted as such, but forms when other pollutants (primary pollutants) react in the atmosphere.
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.
Primary Pollutant. a harmful substance, such as soot or carbon monoxide, that is emitted directly into the atmosphere. Major ones are nitrogen oxides, sulfur dioxide, particulate matter and hydrocarbons. Secondary Pollutant.
Hydrogen is not a pollutant at all among the mentioned gases.
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.
Primary pollutants are emissions that directly cause air pollution in the form in which they are released at the source. Certain primary pollutants can react with other elements or compounds, creating new chemicals that are known as secondary pollutants.
The five primary pollutants are carbon oxides, nitrogen oxides, sulphur oxides, volatile organic compounds and suspended particulate matter.
Is smog a primary pollutant?
Photochemical smog depends on primary pollutants as well as the formation of secondary pollutants. These primary pollutants include nitrogen oxides, particularly nitric oxide (NO) and nitrogen dioxide (NO2), and volatile organic compounds.
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).
Secondary pollutants include ozone, which is formed when hydrocarbons (HC) and nitrogen oxides (NOx) combine in the presence of sunlight. NO2, which is formed when NO combines with oxygen in the air.
Acid deposition (aka "acid rain") occurs when primary pollutants, sulfur dioxide and nitrogen oxides, interact with atmospheric water and moisture to produce a more acidic rain than is natural.
CO is a primary pollutant. Acid rain is a secondary pollutant. Scientists were monitoring a meteor headed toward Earth. It moved off course, but some pieces of rock entered the Earth's atmosphere.
b) ozone; Ozone is NOT a primary pollutant. Primary pollutants are pollutants emitted into the atmosphere directly from the source (by human activity), from the combustion of fossil fuels. They include carbon monoxide, particulate matter, volatile organic compounds (VOCs), nitrogen oxides, and sulfur oxides.
A primary pollutant is a pollutant that is put directly into the air by human activity. An example is soot from smoke.
1. Which of these is NOT a primary pollutant? Explanation: Ozone is not a primary pollutant since it is formed by the photo-chemical reaction of oxygen with the UV rays and not directly discharged into the atmosphere by a source. 2.
