Lucas test is used for the determination of `:`

Options

A. alochols
B. alkyl halides
C. phenols
D. aldehydes .

Explanation

**Step-by-Step Solution:**

1. **Understanding Lucas Test**: The Lucas test is a qualitative test used to differentiate between primary, secondary, and tertiary alcohols based on their reactivity with Lucas reagent.

2. **Composition of Lucas Reagent**: Lucas reagent consists of anhydrous zinc chloride (ZnCl2) and concentrated hydrochloric acid (HCl).

3. **Reactivity of Alcohols**:
- **Primary Alcohols**: When a primary alcohol is treated with Lucas reagent at room temperature, no reaction occurs. This indicates that primary alcohols do not react readily with the reagent.
- **Secondary Alcohols**: When a secondary alcohol is treated with Lucas reagent, a reaction occurs, resulting in the formation of an oily layer and a white precipitate (alkyl chloride) within 3 to 5 minutes.
- **Tertiary Alcohols**: Tertiary alcohols react immediately with Lucas reagent, producing a white precipitate (alkyl chloride) right away, indicating a faster reaction compared to secondary alcohols.

4. **Conclusion**: The Lucas test is specifically used for the determination of alcohols (primary, secondary, and tertiary). Therefore, the correct answer to the question is that Lucas test is used for the determination of alcohols.

**Final Answer**: Alcohols

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