Identify the incorrect statement with respect to ozone.

Options

A. It is formed when dry stream of `O_2` is passed through a silent electrical discharge
B. It acts as a powrful oxidizing agent
C. It's decomposition into oxygen reults in an increase in entropy
D. Ozone protects the earth's inhabitants by absorbing (gamma) radiations

Answer

To solve the question of identifying the incorrect statement with respect to ozone, we need to analyze each statement provided about ozone.

### Step-by-Step Solution:

1. **Understanding Ozone Formation**:
- Ozone (O₃) is formed when oxygen (O₂) molecules are subjected to ultraviolet (UV) radiation or when a silent electric discharge passes through oxygen. This process leads to the formation of ozone from oxygen.
- **Hint**: Recall the methods of ozone formation, particularly the role of UV radiation and electric discharge.

2. **Ozone as an Oxidizing Agent**:
- Ozone is known to be a powerful oxidizing agent. It can oxidize various substances, which is a well-established property of ozone.
- **Hint**: Consider the properties of ozone and its applications in oxidation reactions.

3. **Decomposition of Ozone**:
- Ozone can decompose into oxygen (O₂) and nascent oxygen (O). This decomposition can be triggered by heat or UV radiation, and it results in an increase in entropy because the number of gas molecules increases.
- **Hint**: Think about the thermodynamic principles related to decomposition reactions and entropy changes.

4. **Identifying the Incorrect Statement**:
- The question asks for the incorrect statement. Based on the analysis, if the fourth statement is said to be incorrect, we can conclude that it does not align with the established facts about ozone.
- **Hint**: Compare the statements against known facts about ozone to find inconsistencies.

### Conclusion:
After analyzing the statements, we find that the fourth statement is incorrect. Therefore, the answer to the question is that the fourth statement regarding ozone is the incorrect one.