Ozone is an unstable, dark blue diamagnetic gas. It absorbs strongly the UV radiation, thus proteching the people on the earth from the harmful UV radiation from the sun. The use of chloroflurocarbon (CFC) in aeroslos and refrigrators, and their subsequent escape into the atomsphere, is blamond for making holes in the ozone layer over the Antarctic, and Arctic.
Ozone acts as a strong oxdising agent in acidic and alkaline medium. For this property ozone is used as a germicide and disinfectant for sterillising water and improving the atmosphere of croweded places.
CFC damages ozone layer by reactions :

Options

A. `O_(3)+hv to O+O_(2)`
B. `CI+O_(3) to CIO+O_(2)`
C. `CIO+O to CI +O_(2)`
D. All of these.

Explanation

### Step-by-Step Solution

1. **Understanding Ozone and Its Importance**:
- Ozone (O₃) is a triatomic molecule that exists as a dark blue, unstable, and diamagnetic gas. It plays a crucial role in absorbing harmful ultraviolet (UV) radiation from the sun, thereby protecting living organisms on Earth.

2. **Impact of Chlorofluorocarbons (CFCs)**:
- Chlorofluorocarbons (CFCs) are compounds used in aerosols and refrigerators. When released into the atmosphere, they contribute to the depletion of the ozone layer, particularly over the Antarctic and Arctic regions.

3. **Ozone as an Oxidizing Agent**:
- Ozone acts as a strong oxidizing agent in both acidic and alkaline media. This property allows it to be used as a germicide and disinfectant, particularly for sterilizing water and improving air quality in crowded areas.

4. **Reactions Involving Ozone and CFCs**:
- The reactions that illustrate how CFCs damage the ozone layer can be summarized as follows:
- **Reaction 1**: Ozone absorbs UV radiation and can dissociate into oxygen molecules (O₂) and oxygen atoms (O).
- **Reaction 2**: Chlorine (Cl) reacts with ozone (O₃) to form chlorine monoxide (ClO) and oxygen (O₂).
- **Reaction 3**: Chlorine monoxide (ClO) can react with an oxygen atom (O) to regenerate chlorine (Cl) and produce more oxygen (O₂).

5. **Chain Reaction Mechanism**:
- The release of chlorine free radicals from CFCs leads to a chain reaction that continuously depletes ozone. The chlorine radicals generated can react with ozone, leading to the breakdown of ozone molecules and the formation of more chlorine radicals, perpetuating the cycle.

6. **Conclusion**:
- Based on the reactions discussed, we conclude that both reactions involving chlorine and ozone (Reactions 2 and 3) are correct and contribute to the depletion of the ozone layer.