Chosse the incorrect statement.

Options

A. The Montreal protocol is associated with the control of emission of ozone depleting substances.
B. Methane and carbon dioxide are greenhouse gases.
C. Dobson units are used to measure oxygen content.
D. Use of incinertators is crucial to disposal of hospital wastes.

Explanation

To solve the question of identifying the incorrect statement, we will analyze each option step by step.

### Step-by-Step Solution:

1. **Analyze Statement A**:
- The Montreal Protocol is associated with the control of emission of ozone-depleting substances.
- This statement is true. The Montreal Protocol was indeed established to control substances that deplete the ozone layer.

2. **Analyze Statement B**:
- Methane and carbon dioxide are greenhouse gases.
- This statement is also true. Methane and carbon dioxide are recognized as significant greenhouse gases, contributing to global warming.

3. **Analyze Statement C**:
- Dobson units are used to measure oxygen content.
- This statement is incorrect. Dobson units are actually used to measure the thickness of the ozone layer, not the oxygen content.

4. **Analyze Statement D**:
- The use of incinerators is crucial to the disposal of hospital waste.
- This statement is true. Incineration is a common method for disposing of hospital waste, which is considered solid waste.

### Conclusion:
After analyzing all statements, we find that Statement C is the incorrect one. Therefore, the answer to the question is Statement C.

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