Which of the following statements is wrong?

Options

A. Ozone is not responsible for green house effect.
B. Ozone can oxidise sulphur dioxide present in the atmosphere to sulphur trioxide.
C. Ozone hole is thinning of ozone layer present in stratosphere.
D. Ozone is produced in upper stratosphere by the action of UV rays on oxygen

Explanation

To determine which statement is wrong regarding ozone and its effects, let's analyze each statement step by step.

### Step 1: Analyze the first statement
**Statement:** Ozone is not responsible for the greenhouse effect.
**Analysis:** This statement is incorrect. Ozone is indeed a greenhouse gas and contributes to the greenhouse effect by trapping heat in the atmosphere. Therefore, this statement is wrong.

### Step 2: Analyze the second statement
**Statement:** Ozone can oxidize sulfur dioxide present in the atmosphere to sulfur trioxide.
**Analysis:** This statement is correct. Ozone can react with sulfur dioxide (SO2) to form sulfur trioxide (SO3) through an oxidation reaction. The reaction can be represented as:
\[ \text{SO}_2 + \text{O}_3 \rightarrow \text{SO}_3 + \text{O}_2 \]
This confirms that ozone can oxidize sulfur dioxide.

### Step 3: Analyze the third statement
**Statement:** Ozone hole is thinning of the ozone layer present in the stratosphere.
**Analysis:** This statement is also correct. The term "ozone hole" refers to the depletion or thinning of the ozone layer in the stratosphere, primarily due to human-made chemicals like chlorofluorocarbons (CFCs).

### Step 4: Analyze the fourth statement
**Statement:** Ozone is produced in the upper stratosphere by the action of UV rays on oxygen.
**Analysis:** This statement is correct as well. Ozone is formed when ultraviolet (UV) radiation splits oxygen molecules (O2) into individual oxygen atoms, which then react with other oxygen molecules to form ozone (O3):
\[ \text{UV light} + \text{O}_2 \rightarrow 2 \text{O} \]
\[ \text{O} + \text{O}_2 \rightarrow \text{O}_3 \]

### Conclusion
After analyzing all four statements, it is clear that the first statement is the only incorrect one. Therefore, the answer to the question is that the first statement is wrong.

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