Which statements are correct in the case of acetaldehyde and acetone ?

Options

A. Both react with hydroxylamine
B. Both react with `NaHSO_(3)`
C. Both react with hydrazine
D. Both reduce ammoniacal silver nitrate

Answer

To determine which statements are correct regarding acetaldehyde and acetone, we will analyze each statement step by step.

### Step 1: Reaction with Hydroxylamine
- **Statement**: Both acetaldehyde and acetone show reactions with hydroxylamine.
- **Analysis**:
- Acetaldehyde (CH3CHO) reacts with hydroxylamine (NH2OH) to form an oxime (CH3C=NOH) and water.
- Acetone (CH3COCH3) also reacts with hydroxylamine to form an oxime (CH3C(CH3)=NOH) and water.
- **Conclusion**: This statement is **correct**.

### Step 2: Reaction with Sodium Bisulfite (NaHSO3)
- **Statement**: Both acetaldehyde and acetone react with NaHSO3.
- **Analysis**:
- Acetaldehyde reacts with NaHSO3 to form a bisulfite adduct.
- Acetone also reacts with NaHSO3 to form a bisulfite adduct.
- **Conclusion**: This statement is **correct**.

### Step 3: Reaction with Hydrazine
- **Statement**: Both of them react with hydrazine.
- **Analysis**:
- Acetaldehyde reacts with hydrazine (NH2NH2) to form a hydrazone.
- Acetone also reacts with hydrazine to form a hydrazone.
- **Conclusion**: This statement is **correct**.

### Step 4: Reaction with Ammonical Silver Nitrate (Tollens' Reagent)
- **Statement**: Both of them reduce ammonical silver nitrate.
- **Analysis**:
- Acetaldehyde (an aldehyde) reacts with Tollens' reagent to give a positive test, forming a silver mirror.
- Acetone (a ketone) does not react with Tollens' reagent and gives a negative test.
- **Conclusion**: This statement is **incorrect**.

### Final Conclusion
The correct statements regarding acetaldehyde and acetone are:
1. Both acetaldehyde and acetone react with hydroxylamine.
2. Both acetaldehyde and acetone react with sodium bisulfite.
3. Both acetaldehyde and acetone react with hydrazine.

Thus, the correct options are the first three statements.

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