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Standard VII
Chemistry
Constituents of Air
Which one of ...
Question
Which one of the following is not a function of air?
A
Combustion
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B
To fill the balloons and air strip
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C
Respiration
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D
Pollination of plants
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Solution
The correct option is
B
To fill the balloons and air strip
Air is a mixture of different types of gases, dust particles, water vapours, etc.
The important components of air are nitrogen, oxygen, argon, carbon dioxide, etc,
Air is a very important component of the earth because of the following reasons
It provides us fresh oxygen for respiration process
It supports the water cycle
It facilitates pollination in plants
Conduct sound and help in the transmission
It helps in the combustion process.
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