Question
Explain the location, importance and degradation of ozone layer.
✓
Answer
→ Location of Ozone Layer : The stratosphere is located at the height of $50 km$ above the surface of the earth. Ozone layer is present in this stratosphere.
→ Importance of Ozone layer : Ozone atom protects the organisms on earth by absorbing the UV radiations of 310 to $200 nm$ (nanometer) wavelength.
⇒ Degradation of Ozone layer :
→ Depletion of stratospheric ozone is a serious global problem. It is registered for the first time in the year 1980.
→ Depletion of Ozone layer has been reported all over the earth.
→ Ozone depletion in the south pole region has been $40 \%$ to $50 \%$. Such a large phenomenon is called an ozone hole. Such ozone hole has also been reported in the North pole region.
→ Spread of Ozone holes even in human habitation areas exists.
→ Whether this will happen or not depends on weather conditions and existence of impurities in the atmosphere.
→ Addition of chlorine (Cl) in the atmosphere is the main responsible factor for the depletion of the ozone layer.
→ The reaction of Chlorine molecule with ozone, remover oxygen molecules one by one. In this splitting, one molecule of chlorine splits $1,00,000$ atoms of ozone.
→ CFC (Chlorofluorocarbon) is considered the major compound responsible for $80 \%$ of the total depletion of stratospheric ozone.
→ Freon, used in refrigerators and air conditioners, is one of these substances.
→ Importance of Ozone layer : Ozone atom protects the organisms on earth by absorbing the UV radiations of 310 to $200 nm$ (nanometer) wavelength.
⇒ Degradation of Ozone layer :
→ Depletion of stratospheric ozone is a serious global problem. It is registered for the first time in the year 1980.
→ Depletion of Ozone layer has been reported all over the earth.
→ Ozone depletion in the south pole region has been $40 \%$ to $50 \%$. Such a large phenomenon is called an ozone hole. Such ozone hole has also been reported in the North pole region.
→ Spread of Ozone holes even in human habitation areas exists.
→ Whether this will happen or not depends on weather conditions and existence of impurities in the atmosphere.
→ Addition of chlorine (Cl) in the atmosphere is the main responsible factor for the depletion of the ozone layer.
→ The reaction of Chlorine molecule with ozone, remover oxygen molecules one by one. In this splitting, one molecule of chlorine splits $1,00,000$ atoms of ozone.
→ CFC (Chlorofluorocarbon) is considered the major compound responsible for $80 \%$ of the total depletion of stratospheric ozone.
→ Freon, used in refrigerators and air conditioners, is one of these substances.
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