Which of the following is the correct structure of D.D.T.?

Options

A.
B.
C.
D.

Answer

To determine the correct structure of DDT (Dichlorodiphenyltrichloroethane), we can follow these steps:

### Step 1: Understand the Full Name
DDT stands for Dichlorodiphenyltrichloroethane. This name gives us important clues about the structure:
- **Dichloro** indicates that there are two chlorine atoms.
- **Diphenyl** indicates that there are two phenyl groups (benzene rings).
- **Trichloroethane** indicates that there is an ethane backbone with three chlorine atoms attached.

### Step 2: Draw the Ethane Backbone
Start by drawing the ethane backbone, which consists of two carbon atoms connected by a single bond:
```
C - C
```

### Step 3: Attach the Chlorine Atoms
According to the name, we need to add three chlorine atoms to the ethane:
- Attach three chlorine atoms to one of the carbon atoms in the ethane:
```
C - C
| |
Cl Cl
|
Cl
```

### Step 4: Add the Phenyl Groups
Next, we need to attach two phenyl groups to the ethane backbone. Each phenyl group is a benzene ring (C6H5):
- Attach one phenyl group to each carbon of the ethane:
```
C6H5 - C - C - C6H5
|
Cl
|
Cl
|
Cl
```

### Step 5: Complete the Structure
Now, ensure that all the valences are satisfied. Each carbon in the ethane should have four bonds:
- The carbon atoms in the ethane are bonded to the phenyl groups and the chlorine atoms.

### Step 6: Verify Against Options
Now, compare the drawn structure with the options provided in the question. The correct structure of DDT should match the one you have drawn.

### Final Answer
The correct structure of DDT is represented by option 3.

---