The video explains the composition of air, highlighting the major gases like nitrogen and oxygen, and minor components such as carbon dioxide and argon. It also mentions the presence of dust, smoke, and water vapor, noting that the composition can vary by location.

What is the primary component of air?

• Oxygen

• Nitrogen

• Carbon Dioxide

• Argon

Which gas makes up approximately 21% of the air?

• Nitrogen

• Oxygen

• Argon

• Carbon Dioxide

What is the percentage of carbon dioxide in the air?

• 21%

• 0.04%

• 0.93%

• 0.03%

Which of the following is NOT a gas found in the air?

• Oxygen

• Nitrogen

• Water Vapor

• Argon

What additional components can be found in the air besides gases?

• Pollen

• All of the above

• Smoke

• Dust particles