What is the IUPAC name of C{{l}_{2}}CHC{{H}_{2}}OH?(A) 2,2-Dichloro ethanol(B) 2,2-Dichloro ethanol(C) 2,2-Dual Chlorine ethanol(D) 2,2-Chloro Chloro ethanol

To determine the correct IUPAC name for the compound \( \text{CCl}_2\text{CH}_2\text{OH} \), we need to analyze its structure.

### Step 1: Identify the Structure
The molecular formula indicates that we have:

- A carbon chain with a hydroxyl (\(-OH\)) group, indicating that it is an alcohol.
- Two chlorine atoms (\( \text{Cl} \)) attached to the carbon chain.

Given the formula \( \text{CCl}_2\text{CH}_2\text{OH} \), we can derive the structure as follows:

1. **Carbon Skeleton**: There are 2 carbon atoms.
2. **Hydroxyl Group**: The presence of \(-OH\) suggests it is an alcohol.
3. **Chlorine Substituents**: The two \( \text{Cl} \) groups are attached to the first carbon.

This gives the structure:

```
Cl
|
Cl - C - CH2 - OH
```

### Step 2: Determine the Position of the Groups
1. The \( \text{OH} \) group (hydroxyl group) is on the second carbon.
2. The two \( \text{Cl} \) groups are on the first carbon.

### Step 3: Assigning the IUPAC Name
When naming the compound:

1. The longest carbon chain is identified (2 carbon atoms, hence it's an ethanol derivative).
2. Number the carbon atoms in the chain starting from the end closest to the functional group (hydroxyl group).

Since the chlorine atoms are on the first carbon and the hydroxyl group is on the second carbon, the name will be:

- **Substituents**: Two \( \text{Cl} \) on carbon 1, making it **2,2-Dichloro**.
- **Alcohol part**: Since it has an -OH group, it's **ethanol**.

Thus, the full IUPAC name is **2,2-Dichloroethanol**.

### Answer
The correct answer is (A) **2,2-Dichloroethanol**.

(Note: Option (B) is the same as (A), which might be an error in the options presented.)