`( p - C l C _6 H _4 ) _2 C H C C l _3` is used as a/an

Options

A. Antiseptic for wounds
B. Insecticide
C. Pyrene
D. Refrigerant

Answer

To solve the question regarding the use of the compound \( (p-ClC_6H_4)_2CHCCl_3 \), we will follow these steps:

### Step 1: Identify the Compound
The compound given is \( (p-ClC_6H_4)_2CHCCl_3 \). This notation indicates that we have a central carbon atom (CH) attached to two para-chlorophenyl groups and one trichloroethyl group.

### Step 2: Draw the Structure
To visualize the compound, we can draw its structure:
- Start with a central carbon atom (C).
- Attach two para-chlorophenyl groups (\( p-ClC_6H_4 \)) to this carbon.
- Attach a trichloroethyl group (CCl3) to the same central carbon.

The structure can be represented as follows:
```
Cl
|
C6H4 - C - CCl3
|
C6H4
```

### Step 3: Determine the Common Name
The common name for this compound is Dichloro-Diphenyl-Trichloroethane, abbreviated as DDT.

### Step 4: Identify the Use of DDT
DDT is widely known for its use as an insecticide. It was historically used for pest control in agriculture and for controlling disease-carrying insects such as mosquitoes.

### Step 5: Analyze the Options
Now, let's analyze the provided options:
- **Option A:** Antiseptic for wounds - Incorrect, DDT is not used as an antiseptic.
- **Option B:** Insecticide - Correct, DDT is primarily known as an insecticide.
- **Option C:** Pyrene - Incorrect, this compound is not pyrene.
- **Option D:** Refrigerant - Incorrect, DDT is not used as a refrigerant.

### Conclusion
Based on the analysis, the correct answer is **Option B: Insecticide**.

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