What is the composition of air?

Short/Brief Note

Air is a mixture of 79% nitrogen, 20% oxygen, 1% carbon dioxide, water vapours, and some other gases. Air also contains dust particles.

shaalaa.com

Is there an error in this question or solution?

Answer the question put against the following constituents of air :

Water vapours : Explain their role in modifying the earth’s climate.

What are the causes of air pollution?

Tick (√) the most appropriate answer.

Which is not a polluting gas for the air?

Name the following:

A process which removes carbon dioxide from the air.

What happens if the percentage of carbon-dioxide increases in the air?

Can you guess why fire extinguishers throw a stream of carbon-di-oxide while putting - off the fire?

Air contains a small amount of CO₂, Water vapour, and some other gases like ______, etc.

Nitrogen is an essential element present in proteins and nucleic acids which are the building blocks of living things.

A list of words is given in a box. Use appropriate words to fill up the blank in the following statement.

A weather cock shows the ______ in which the air is moving at that place.

Write just a few sentences for an imaginary situation if any of the following gases disappear from the atmosphere.

Carbon dioxide