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प्रश्न
What is meant by the term ‘atmosphere’? State the role played by the atmosphere for the survival of mankind.
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उत्तर
A blanket of air around earth is called the atmosphere. Without an atmosphere, life would not be possible, as the atmosphere protects us from harmful gases. We could not live without the air present in the atmosphere. In the absence of the atmosphere, the earth would get so cold at night that we would not be able to survive. No \[\ce{CO2}\] and \[\ce{N2}\] for plants without atmosphere.
संबंधित प्रश्न
Name two air pollutants which affect our health.
A mixture has a variable composition. Give three other reasons why air is considered a mixture and not a compound.
State whether the following statement is ‘true’ or ‘false’. If false write the correct statement.
Air is a mixture and not a compound since the components of air cannot be separated by physical methods.
Why is it said that-
Air is a homogeneous mixture of various gases.
State the meaning of the term atmosphere.
Draw a neat labelled diagram for the following experiment.
To study the presence of carbon dioxide in air.
Mention two uses of air.
______ is important for all living creatures.
About 78% of the volume of air is ______.
State whether the following statement is true or false. If false, correct them.
Air does not occupy any space.
