AIr Pollution(8.2 Common Air Pollutants and how they are form)

The four common air pollutants are carbon monoxide, nitrogen oxide, _________ and __________.

(Choose 2 answers)

• Carbon dioxide

• particulate matter

• water vapour

• sulfur dioxide

Source of air pollutants 1:

When (a)   (2 words) burned, pollutants such as sulfur dioxide and particulate matter is produced.

_________ is formed when there is incomplete burning of fossil fuels.

• carbon dioxide

• carbon monoxide

• nitrogen oxide

• sulfur dioxide

At high temperatures, which air pollutant is produced in the engine of motor vehicles?

• nitrogen oxide

• sulfur dioxide

• carbon dioxide

• carbon monoixde

Forest fires produces this air pollutant. What is the air pollutant produced?

• carbon dioxide

• particulate matter

• nitrogen dioxide

• sulfur dioxide

What does PM2.5 means?

• Particulate matter size 2.5 cm and smaller

• Particulate matter size 2.5 µm and smaller

• Particulate matter size 2.5 mm and smaller

• Particulate matter size 2.5 nm and smaller