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Explain the Differences Between Pure Air and Polluted Air. - CBSE Class 8 - Science

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Question

Explain the differences between pure air and polluted air.

Solution

Pure air contains around 78% nitrogen, 21% oxygen, and 0.03% carbon dioxide. Other gases such as argon, methane, ozone, and water vapours are also present in small quantities. When this composition of air is altered by the addition of harmful substances or gases such as nitrogen dioxide, sulphur dioxide, carbon monoxide, and particulate matter, then the air is said to be polluted

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APPEARS IN

 NCERT Solution for Science Textbook For Class 8 (2018 to Current)
Chapter 18: Pollution of Air and Water
Q: 5 | Page no. 250
Solution Explain the Differences Between Pure Air and Polluted Air. Concept: Air Get Polluted.
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