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Question

  Explain the differences between pure air and polluted air.  [3 MARKS]
 


Solution

Each point: 1 Mark

Pure AirPolluted AirPure air contains around 78%Polluted air includes gasesnitrogen,21% oxygen, and 0.03% carbonlike sulphur dioxide, nitrogendioxide and also small amounts ofdioxide, carbon dioxide, etc.argon, methane, ozone, and water vapours.and other particulate matter.Smog is not present.Smog can be present.Not harmful for human beingsHarmful for human beings as it causes diseases like asthma


Chemistry

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