Chemical used in National Malaria Eradication Programme has been

Options

A. 2-4 D
B. DDT
C. BHC
D. Pyrethroid.

Answer

To solve the question regarding the chemical used in the National Malaria Eradication Programme, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Chemicals Listed**: The question provides four options: 2,4-D, DDT, BHC, and Pyrethroid. We need to analyze each of these chemicals to determine which one is used specifically in the National Malaria Eradication Programme.

2. **Analyze 2,4-D**:
- 2,4-D is a synthetic auxin primarily used as a herbicide for controlling broadleaf weeds. It is not used for mosquito control or malaria eradication.

3. **Analyze DDT**:
- DDT stands for Dichlorodiphenyltrichloroethane. It is an organochlorine compound known for its effectiveness in killing insects, particularly mosquitoes. DDT was discovered by Dr. Paul Müller and has been widely used in malaria control programs due to its ability to target Anopheles mosquitoes, which are responsible for transmitting malaria in humans. Its cost-effectiveness also makes it a preferred choice in such programs.

4. **Analyze BHC**:
- BHC stands for Benzene Hexachloride, which is also used as an insecticide. However, it is not specifically noted for its use in the National Malaria Eradication Programme.

5. **Analyze Pyrethroid**:
- Pyrethroids are synthetic derivatives of pyrethrins and are used as insecticides. While they are effective against various pests, they are not the primary chemical used in the National Malaria Eradication Programme.

6. **Conclusion**:
- Based on the analysis, the chemical used in the National Malaria Eradication Programme is DDT. Therefore, the correct answer is option number two.

### Final Answer:
The chemical used in the National Malaria Eradication Programme is **DDT (Dichlorodiphenyltrichloroethane)**.

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