CFC s split up in strastosphere to release chlorine by the action of

Options

A. UV-A
B. UV-B
C. UV-C
D. All the above

Answer

**Step-by-Step Solution:**

1. **Understanding CFCs**: Chlorofluorocarbons (CFCs) are chemical compounds that were commonly used in refrigeration, air conditioning, and aerosol propellants. They are known to be ozone-depleting substances.

2. **Location of Action**: CFCs eventually rise into the stratosphere, which is the second layer of Earth's atmosphere located approximately 15 to 30 kilometers above the surface. This layer contains the ozone layer, which protects the Earth from harmful ultraviolet (UV) radiation.

3. **Effect of UV Radiation**: When CFCs reach the stratosphere, they are exposed to ultraviolet radiation. There are different types of UV radiation: UV-A, UV-B, and UV-C. Each has different wavelengths and energy levels.

4. **Role of UV-C**: Among these, UV-C radiation has the highest energy and is most effective at breaking chemical bonds. It is specifically responsible for breaking the bonds in CFC molecules, leading to the release of chlorine atoms.

5. **Chlorine's Reaction with Ozone**: Once chlorine is released, it is highly reactive and can react with ozone (O₃) molecules in the stratosphere. This reaction leads to the formation of chlorine monoxide (ClO) and oxygen (O₂), contributing to the depletion of the ozone layer.

6. **Conclusion**: Therefore, the action responsible for the splitting of CFCs in the stratosphere to release chlorine is primarily due to UV-C radiation.

**Final Answer**: The correct option is UV-C (Option 3).

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