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Worksheets7.1 Air
Total questions: 20
Worksheet time: 10mins
Which of the component have 21% in the air?
Oxygen
Nitrogen
Carbon dioxide
Inert gas and others
Which of the following statement is TRUE
Air is an element
Argon, neon,helium,krypton and xenon are examples of inert gases
The air does not consist dusts and microorganisms
The gas is use for photosynthesis
Oxygen
Carbon dioxide
Nitrogen
Inert gas
The gas is importance for RESPIRATION and COMBUSTION
Inert gas
Nitrogen
Oxygen
Carbon dioxide
The gas is used to fill hot air balloons and weather balloons
Argon
Helium
Neon
Used in advertisement lighting
Nirogen
Neon
Carbon dioxide
Oxygen
For welding and cutting metal
Nitrogen
Carbon dioxide
Oxygen
Name 2 compounds in unpolluted air.
carbon monoxide and argon
sulfur dioxide and nitrogen dioxide
carbon dioxide and water vapour
nitrogen and oxygen
Which air pollutants can cause acid rain?
Nitrogen oxides and sulfur dioxide
Sulfur dioxide and carbon monoxide
Nitrogen oxides and ozone
Sulfur dioxide and ozone
Which of these processes may produce sulfur dioxide?
1 combustion of fossil fuels
2 lightning activity
3 volcanic eruptions
1 and 2 only
1 and 3 only
2 and 3 only
1, 2 and 3
A glowing splinter _____ when oxygen is present.
rekindles
extinguish
glows brighter
stop burning
Rust is formed when iron is exposed to oxygen and _____.
nitrogen
carbon dioxide
inert gases
water
Which reduces the amount of oxygen that red blood cells can carry?
Nitrogen oxides
Carbon monoxide
Sulfur dioxide
Lead compounds
Which layer of the atmosphere is the hottest?
exosphere
mesosphere
thermosphere
stratosphere
We can see meteors (falling stars) in this layer.
exosphere
thermosphere
troposphere
mesosphere
The ozone layer is found in the
troposphere
stratosphere
mesosphere
thermosphere
Which property of Air shown in the image?
Air exerts pressure
Air is needed for burning
Air has weight
Air has mass
Look at the picture and guess which propert of Air is shown?
Air has mass
Air occupies space
Air can be heated and cooled
