In Wolf - Kishner reduction, the carbonyl group of aldehydes and ketones is converted into

Options

A. `-CH_2` group
B. `-CH_3` group
C. `-CH_2OH` group
D. `gt CHOH ` group

Answer

### Step-by-Step Solution:

1. **Understanding Wolff-Kishner Reduction**:
The Wolff-Kishner reduction is a chemical reaction used to convert carbonyl groups (C=O) in aldehydes and ketones into alkanes. This is achieved through the use of hydrazine (NH2-NH2) and a strong base, typically potassium hydroxide (KOH).

2. **Reaction Mechanism**:
- The carbonyl compound (aldehyde or ketone) reacts with hydrazine to form a hydrazone intermediate.
- The hydrazone is then treated with a strong base, which leads to the removal of nitrogen gas (N2) and results in the formation of an alkane.

3. **Chemical Reaction**:
- The general reaction can be represented as follows:
\[ R_2C=O + NH_2-NH_2 \xrightarrow{KOH} R_2C-H_2 \]
- Here, \(R_2C=O\) represents the carbonyl group of the aldehyde or ketone, and \(R_2C-H_2\) represents the corresponding alkane.

4. **Conclusion**:
- Therefore, in the Wolff-Kishner reduction, the carbonyl group of aldehydes and ketones is converted into an alkyl group.

5. **Identifying the Correct Option**:
- Based on the options provided, the correct answer is that the carbonyl group is converted into an alkyl group.

### Final Answer:
The carbonyl group of aldehydes and ketones is converted into an **alkyl group** in Wolff-Kishner reduction.

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