Which of the following alcohols do not give white turbidity on treatment `HCl//ZnCl_(2)`?

Options

A. `CH_3CH_2OH`
B.
C. `N-=C-underset(CH_3)underset(|)(CH)-OH`
D. `(CH_3)_3COH`

Answer

To determine which alcohols do not give white turbidity when treated with HCl and ZnCl₂ (known as Lucas reagent), we can analyze the reactivity of different types of alcohols (primary, secondary, and tertiary) with this reagent.

### Step-by-Step Solution:

1. **Understand the Lucas Test**: The Lucas test is used to differentiate between primary, secondary, and tertiary alcohols based on their reactivity with Lucas reagent (HCl/ZnCl₂). Tertiary alcohols react quickly, forming a cloudy solution (white turbidity), while secondary alcohols react more slowly, and primary alcohols do not react significantly.

2. **Identify the Types of Alcohols**:
- **Primary Alcohols**: These have one alkyl group attached to the carbon bearing the hydroxyl (-OH) group. They generally do not produce turbidity with Lucas reagent.
- **Secondary Alcohols**: These have two alkyl groups attached to the carbon with the -OH group. They produce turbidity more slowly than tertiary alcohols.
- **Tertiary Alcohols**: These have three alkyl groups attached to the carbon with the -OH group. They react quickly and produce a significant amount of turbidity.

3. **Evaluate the Given Options**:
- **Option A**: Identify if it is a primary, secondary, or tertiary alcohol. If it is primary, it will not give turbidity.
- **Option B**: Check if it is secondary. If it is secondary, it will give turbidity.
- **Option C**: Check if it is secondary. If it is secondary, it will give turbidity.
- **Option D**: Identify if it is tertiary. If it is tertiary, it will give turbidity.

4. **Conclusion**: Based on the analysis, the primary alcohol is the one that does not give white turbidity when treated with Lucas reagent. Therefore, the answer to the question is the primary alcohol from the options provided.

### Final Answer:
The alcohol that does not give white turbidity on treatment with HCl/ZnCl₂ is the primary alcohol.

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