Which of the following statements is wrong?

Options

A. Ozone is produced in upper stratosphere by the action of UV rays on oxygen
B. Ozon can oxidize sulphur dioxide present in the atmosphere to sulphur trioxide
C. Ozone hole is thining of ozone layer present in stratosphere
D. none of these

Answer

To determine which statement is wrong, we will analyze each statement one by one.

### Step 1: Analyze the First Statement
**Statement:** Ozone is produced in the upper stratosphere by the action of UV rays on oxygen.

**Explanation:** This statement is correct. Ozone is indeed produced in the upper stratosphere through a process where ultraviolet (UV) rays break down molecular oxygen (O2) into individual oxygen atoms (O). These oxygen atoms can then react with other O2 molecules to form ozone (O3).

### Step 2: Analyze the Second Statement
**Statement:** Ozone can oxidize Sulphur dioxide present in the atmosphere to Sulphur trioxide.

**Explanation:** This statement is also correct. Ozone is a strong oxidizing agent and can react with sulfur dioxide (SO2) to form sulfur trioxide (SO3). This reaction can occur in the presence of UV radiation.

### Step 3: Analyze the Third Statement
**Statement:** Ozone hole is thinning of the ozone layer present in the stratosphere.

**Explanation:** This statement is correct as well. The term "ozone hole" refers to the significant reduction in ozone concentration in the stratosphere, primarily caused by human-made chemicals such as chlorofluorocarbons (CFCs).

### Step 4: Analyze the Fourth Statement
**Statement:** None of these.

**Explanation:** This statement implies that none of the previous statements are wrong. Since we have established that all previous statements are correct, this statement is also correct.

### Conclusion
After analyzing all statements, we find that all of the statements provided are correct. Therefore, the answer to the question, "Which of the following statements is wrong?" is:

**Answer:** None of these (all statements are correct).

---