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Atmospheric Pollution — CHEMISTRY STD 9 — Question

ICSE BoardEnglish MediumSTD 9CHEMISTRYAtmospheric Pollution3 Marks
Question
What is the function of ozone in the atmosphere?
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Answer

The ozone layer acts as a blanket in the atmosphere by absorbing harmful UV rays coming from the Sun and prevents them from reaching Earth. Ozone absorbs UV radiation of comparatively longer wavelength forming an oxygen molecule and an oxygen atom.
$O_3-→ O_2 + O$
Thus, the ozone layer protects life on Earth from the harmful effects of ultraviolet rays which can cause skin cancer and destroy many organic species necessary for life.

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