Which one of the following is not an organochlorine?

Options

A. Parathion
B. DDT
C. BHC
D. Aldrin

Answer

To determine which of the following compounds is not an organochlorine, we need to analyze each option based on its chemical classification:

1. **Understanding Organochlorines**:
- Organochlorines are a group of synthetic pesticides that are characterized by the presence of chlorine atoms in their molecular structure. They are primarily chlorinated hydrocarbons.

2. **Analyzing the Options**:
- **Option A: Parathion**:
- Parathion is classified as an organophosphate insecticide. Organophosphates do not contain chlorine in their structure, which means Parathion is not an organochlorine.
- **Option B: DDT**:
- DDT stands for dichlorodiphenyltrichloroethane. It contains multiple chlorine atoms and is indeed classified as an organochlorine.
- **Option C: BHC**:
- BHC, or benzene hexachloride, is a chlorinated hydrocarbon and is also classified as an organochlorine.
- **Option D: Aldrin**:
- Aldrin is another chlorinated compound and is classified as an organochlorine pesticide.

3. **Conclusion**:
- Based on the analysis, the compound that is not an organochlorine is **Parathion** (Option A), as it is an organophosphate and does not contain chlorine.

**Final Answer**: A) Parathion

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