Composition of Air
Composition of Air: Overview
This topic discusses the composition of air and the percentage of gases present in the air. It also contains an activity which helps us understand the presence of oxygen in the air.
Important Questions on Composition of Air
The following picture show that air contains _____.
From your day-to-day experience, give one example to show that air contains water vapour.
(Hint: Have you ever kept a cold drink bottle outside the fridge for some time?)
Recall and complete the concept map given below.
The addition of harmful gases and substances in air is called as?
A gas that does not support burning
Name a gas that supports burning (Oxygen / Nitrogen)
Air contains
Air is made up of
Air contains dust and _____ (smoke/fire).
The form of water that is present in air is _____ (water vapour/liquid water).
_____ (Oxygen/Nitrogen) is needed for burning.
_____ (Oxygen/Nitrogen) constituents about 78% of air.
Air is a _____ (solution/mixture) of gases.
Write a short note on the composition of air.
Match the following:
| Column A | Column B |
| 1. Noble gases | a. Less than |
| 2. Oxygen | b. Gills |
| 3. Nitrogen | c. Spiracles |
| 4. Fish | d. |
| 5. Insects | e. |
Gas with the highest percentage in air is
