WorksheetsChapter 7- Exercise 7.1 Composition of Air
Total questions: 10
Worksheet time: 5mins
What is Gas P?
Oxygen
Nitrogen
Carbon dioxide
Inert gas
What is gas Q?
Oxygen
Carbon dioxide
Nitrogen
Inert gas
Why air is considered a mixture ?
Each gas has no color, so cannot be differentiate
Each gas still shows its original properties when separated.
Air is made up of different gases which combined chemically
Air can be separated by using electrolysis
Carbon cycle maintain which of the following gas in the air?
Nitrogen
Carbon monoxide
Carbon dioxide
Oxygen
The air is made up of _____% Nitrogen.
87
78
76
Oxygen helps in __________.
(more than 1 answer)
Photosynthesis
Combustion
Make dry ice
Make carbonated drinks
Respiration
____________ helps in photosynthesis.
Inert gas
Oxygen
Carbon dioxide
Nitrogen
What is the function of helium gas?
Fill in hot air balloon
To make carbonated drink
Use in fire extinguisher
To make light bulb
Which of the following process release oxygen to the air?
Decomposition
Combustion
Rusting
Photosynthesis
What is carbon cycle?
cycle that maintain the content of oxygen in the air by taking oxygen from the air and return it to the air.
cycle that maintain the content of oxygen and carbon dioxide in the air by taking oxygen and carbon dioxide from the air and return it to the air.
cycle that maintains the content of carbon dioxide in the air by continuously taking carbon dioxide from the air and returning it to the air.
cycle that maintains the content of carbon monoxide in the air by continuously taking carbon monoxide from the air and returning it to the air.
