What are the primary pollutants? Give three examples.

Hint: The primary pollutants are highly damaging and have a faster effect on the environment than the secondary pollutants. This is because these pollutants can mix easily with the environment and get liberated more from different sources all around.

Complete answer:
Primary pollutants are those polluting chemicals which are released directly from a specific source. This means such air pollutants are directly removed as the products from the given source and results in the direct changes in the condition of air. These polluting chemicals can be detrimental to human life due to the adversity of their presence in the air. This can also directly affect the lungs of the individuals owing to the changes it can cause inside the body.

They are called primary pollutants since they are directly emitted. Such pollutants can together react with one another to produce the secondary pollutant. All of these are detrimental to the environment and their spread needs to be controlled fast. There are multiple components in air and when the air gets polluted the exchange of gases causes the same level of damage to the body.

Some of the common examples of primary pollutants are there which include Nitrogen oxides $\left( {NOX} \right)$, suspended particulate matter $\left( {SPM} \right)$ and Carbon monoxide $\left( {CO} \right)$. These are the three common examples of primary pollutants. In them, the suspended particulate matter contains multiple chemical elements. But $CO$ and $NOX$ are the compounds which can mix with air resulting in severe lung disorder.

Note:
It is important to curb the spread of these pollutants all around the atmosphere. This is why there are devices which are developed to control the release of these pollutants. Hence the effect is completely controlled before it gets released and the release of products occur in filtered form.