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प्रश्न
Tick (√) the correct alternative from the choice given for the following statement.
Air consists of
पर्याय
only oxygen
only nitrogen
only carbon dioxide
all of these
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उत्तर
all of these
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संबंधित प्रश्न
How is air useful to windmills?
Name three greenhouse gases.
Fill in the blank
Polluted air is harmful to ____.
Tick (√) the correct alternative from the choice given for the following statement.
Respiration
Why is it said that-
Air is a homogeneous mixture of various gases.
How is light scattered by the air?
Fill in the blank:
The gas evolved as a product of combustion as well as respiration is ______.
The composition of air is always exactly the same.
______ is important for all living creatures.
Explain the following observations very briefly
The arrow of weather cock points towards a particular direction at a particular moment.
