the first inorganic pesticiede to be used commercially was

Options

A. Bordeaux mixture
B. Burgandy mixture
C. DDT
D. 2-4D

Answer

To answer the question about the first inorganic pesticide to be used commercially, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: The question asks for the first inorganic pesticide that was used commercially. We need to identify which of the given options fits this description.

2. **Identify the Options**: The options provided are:
- Bordeaux mixture
- Burgundy mixture
- DDT (Dichlorodiphenyltrichloroethane)
- 2,4-D (2,4-Dichlorophenoxyacetic acid)

3. **Define Pesticides**: Pesticides are substances used to kill pests, which are organisms that damage crops. They can be classified into different types, such as fungicides (which target fungi), herbicides (which target plants), and insecticides (which target insects).

4. **Analyze Each Option**:
- **Bordeaux Mixture**: This is a fungicide that was developed in 1882 and became widely used around 1885. It is an inorganic pesticide.
- **Burgundy Mixture**: Also a fungicide, it came into use around the same time as the Bordeaux mixture (1885). It is also inorganic.
- **DDT**: This is an inorganic pesticide that became commercially available in the late 1940s, specifically around 1945.
- **2,4-D**: This is a herbicide, not a pesticide, and it also became available in the 1940s.

5. **Determine the First Commercial Use**: Among the options, the Bordeaux mixture is the earliest, having been developed in 1882 and used commercially by 1885. The Burgundy mixture came in around the same time, but the Bordeaux mixture is recognized as the first.

6. **Conclusion**: Therefore, the first inorganic pesticide to be used commercially is the **Bordeaux mixture**.

### Final Answer:
The first inorganic pesticide to be used commercially was the **Bordeaux mixture**.