Number of ozone depleters identified by Viena convention for Protection of Ozone Layer (1992) is

Options

A. 19
B. 17
C. 15
D. 13

Answer

To solve the question regarding the number of ozone depleters identified by the Vienna Convention for the Protection of the Ozone Layer (1992), we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Context**: The Vienna Convention for the Protection of the Ozone Layer was established to address the depletion of the ozone layer caused by various chemicals, particularly chlorofluorocarbons (CFCs).

2. **Identify the Year of the Convention**: The Vienna Convention was signed in 1985, and it laid the groundwork for subsequent agreements, including the Montreal Protocol.

3. **Recognize the Focus on Ozone Depleters**: The convention specifically aimed to reduce the production and use of substances that deplete the ozone layer.

4. **Recall the Number of Ozone Depleters**: According to the information provided, the number of ozone depleters identified by the Vienna Convention is 19.

5. **Select the Correct Answer**: Based on the information gathered, the correct answer to the question is 19.

### Final Answer:
The number of ozone depleters identified by the Vienna Convention for the Protection of the Ozone Layer (1992) is **19**.

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