Assertion: Hydroxyketones are not directly used in Grignard reaction.
Reason : Griganard reagnts react with hydroxyl group.

Options

A. If the both assertion and reason are true and the reason is the correct explanation of the assertion
B. If both assertion and reason are true and the reason is not the correct explanation of the assertion
C. If assertion is true but reason is false
D. If both assertion and reason are false statements.

Explanation

To solve the question, we need to analyze the assertion and the reason provided:

### Assertion:
Hydroxyketones are not directly used in Grignard reaction.

### Reason:
Grignard reagents react with hydroxyl groups.

### Step-by-Step Solution:

1. **Understanding Grignard Reagents:**
Grignard reagents are organomagnesium compounds represented as R-MgX (where R is an organic group and X is a halogen). They are highly reactive and can act as nucleophiles.

2. **Reactions of Grignard Reagents:**
Grignard reagents can undergo two main types of reactions:
- **Acid-Base Reactions:** Grignard reagents can react with compounds that have acidic protons (like alcohols) to form hydrocarbons and magnesium salts.
- **Nucleophilic Addition Reactions:** They can add to carbonyl compounds (like aldehydes and ketones) to form alcohols.

3. **Hydroxyketones:**
Hydroxyketones contain both a hydroxyl (-OH) group and a carbonyl (C=O) group. For example, an alpha-hydroxy ketone has the structure R-CO-CH(OH)-R'.

4. **Reactivity of Hydroxyketones with Grignard Reagents:**
- When a hydroxyketone is treated with a Grignard reagent, the hydroxyl group has an acidic hydrogen.
- The Grignard reagent will preferentially react with the acidic hydrogen of the hydroxyl group rather than undergoing nucleophilic addition to the carbonyl carbon.

5. **Conclusion on Assertion and Reason:**
- Since hydroxyketones have acidic protons, they will not directly participate in nucleophilic addition reactions with Grignard reagents. Instead, they will undergo acid-base reactions.
- Therefore, the assertion that hydroxyketones are not directly used in Grignard reactions is correct.
- The reason that Grignard reagents react with hydroxyl groups is also correct and explains why hydroxyketones are not used directly in these reactions.

### Final Answer:
Both the assertion and reason are correct, and the reason correctly explains the assertion.