Ozone in the stratosphere is deleted by

Options

A. `CF_(2)Cl_(2)`
B. `C_(7)H_(16)`
C. `C_(6)H_(6)Cl_(6)`
D. `C_(6)H_(6)`

Answer

**Step-by-Step Solution:**

1. **Understanding Ozone Depletion**: Ozone (O₃) in the stratosphere is crucial for absorbing harmful ultraviolet (UV) radiation from the sun. However, certain substances can lead to its depletion.

2. **Identifying the Culprit**: The primary substances responsible for ozone depletion are chlorofluorocarbons (CFCs). These are man-made compounds that were commonly used in refrigeration, air conditioning, and aerosol propellants.

3. **Mechanism of Action**: Once released into the atmosphere, CFCs are stable and do not break down easily. They gradually drift upwards to the stratosphere.

4. **UV Radiation Interaction**: In the stratosphere, CFCs are exposed to UV radiation. This radiation breaks down CFC molecules, releasing chlorine atoms.

5. **Chlorine's Role in Ozone Destruction**: The released chlorine atoms are highly reactive and can react with ozone molecules. A single chlorine atom can destroy a significant number of ozone molecules (up to 100,000) before it is removed from the stratosphere.

6. **Conclusion**: Therefore, the depletion of ozone in the stratosphere is primarily caused by chlorofluorocarbons (CFCs).

**Final Answer**: Ozone in the stratosphere is depleted by chlorofluorocarbons (CFCs).

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