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प्रश्न
What is the composition of air?
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उत्तर
Air is a mixture of 79% nitrogen, 20% oxygen, 1% carbon dioxide, water vapours, and some other gases. Air also contains dust particles.
संबंधित प्रश्न
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?
Suggest five measures to prevent air pollution.
What is nitrogen-fixation?
Statement given below is incorrect. Write the correct statement :
Carbon dioxide gas allows the earth to radiate out heat rapidly.
Give word equation for the following conversion:
Nitric oxide to nitrogen dioxide
Which gas is essential for burning?
What is the presence of harmful substance in the air called?
When cooled to -57°C, gaseous carbon-di-oxide becomes a liquid.
______ gas is essential for the proper growth of all plants.
