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Class 10 > Learn Natural Resources > 1. Name two chemicals that are depleting ozone layer.
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1. Name two chemicals that are depleting ozone layer.

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Chemicals Depleting the Ozone Layer Introduction: The depletion of the ozone layer is a significant environmental concern caused by human activities. Two main classes of chemicals responsible for this depletion are chlorofluorocarbons (CFCs) and halons. 1. Chlorofluorocarbons (CFCs): CFCs are synthetic...
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Chemicals Depleting the Ozone Layer

Introduction: The depletion of the ozone layer is a significant environmental concern caused by human activities. Two main classes of chemicals responsible for this depletion are chlorofluorocarbons (CFCs) and halons.

1. Chlorofluorocarbons (CFCs):

  • CFCs are synthetic compounds composed of carbon, chlorine, and fluorine atoms.
  • They were commonly used in aerosol sprays, refrigerants, solvents, and foam-blowing agents.
  • CFCs are stable in the lower atmosphere but release chlorine atoms in the stratosphere when they break down due to ultraviolet (UV) radiation.
  • Chlorine atoms catalytically break down ozone molecules, leading to ozone depletion.

2. Halons:

  • Halons are similar to CFCs but contain bromine instead of chlorine.
  • They were primarily used in fire extinguishers and firefighting equipment.
  • Halons release bromine atoms in the atmosphere upon breakdown, which also contribute to ozone depletion.
  • Though less abundant than CFCs, halons are significantly more ozone-depleting on a per-atom basis due to the efficiency of bromine in destroying ozone.

Conclusion: The regulation and eventual phase-out of these ozone-depleting chemicals, particularly through international agreements like the Montreal Protocol, have been crucial in mitigating ozone layer depletion and allowing for its recovery. However, continued vigilance and adherence to regulations are essential to safeguarding the ozone layer and protecting the Earth's atmosphere.

 
 
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