Which pollutant is typically present in the air as a form of particulate matter?

Prepare for the Integrated Science and Technology (ISAT) Exam with our quiz. Use our flashcards and multiple choice questions to study effectively. Each question includes hints and detailed explanations. Get ready to ace your exam!

Soot is a type of particulate matter that originates from incomplete combustion of fossil fuels, biomass, and other organic materials. These tiny particles can be emitted from sources such as vehicles, industrial processes, and wildfires. Soot consists mainly of black carbon, a byproduct of combustion that can remain suspended in the atmosphere for extended periods. Being a solid or liquid particle that is small enough to be inhaled, soot can have significant health impacts, contributing to respiratory and cardiovascular issues.

In contrast, other pollutants listed such as ozone, nitrogen dioxide, and carbon monoxide are primarily found in gaseous forms. Ozone, for example, exists as a gas in the atmosphere, especially at higher altitudes where it forms from chemical reactions between sunlight and pollutants. Nitrogen dioxide is also a gas and originates from vehicle emissions and industrial activities, whereas carbon monoxide is produced by incomplete combustion but remains a gaseous pollutant. Thus, in the context of particulate matter, soot is the correct choice as it is physically present as a solid or liquid particulate in the air.

Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy