Which of the following statements is not correct

Options

A. Aldehydes and ketones undergo nucleophilic additions
B. Aldehydes and ketones undergo electrophilic substitutions
C. Aldehydes and ketones contains polar carbonyl groups
D. Lower members of aldehydes and ketones are soluble in water due to hydrogen bonding

Explanation

To determine which statement is not correct regarding aldehydes and ketones, we will analyze the provided statements step by step.

### Step 1: Identify the Statements
We need to clearly outline the statements given in the question. The statements are about the properties and behaviors of aldehydes and ketones, specifically focusing on nucleophilic addition and solubility.

### Step 2: Analyze the First Statement
The first statement discusses LDLs (likely a typo for aldehydes) and ketones being involved in nucleophilic addition reactions.
- **Aldehydes** and **ketones** do indeed undergo nucleophilic addition reactions due to the presence of a carbonyl group (C=O).
- In aldehydes, the carbonyl carbon is more electrophilic than in ketones because it is bonded to one alkyl group and one hydrogen, making it more susceptible to nucleophilic attack.

### Step 3: Analyze the Second Statement
The second statement mentions that lower molecular weight compounds are soluble in water due to high dosage.
- Generally, lower molecular weight aldehydes and ketones (like formaldehyde and acetone) are indeed soluble in water. This is due to their ability to form hydrogen bonds with water molecules.
- The term "high dosage" seems to be a misinterpretation; it likely refers to "high polarity" or "high solubility" instead.

### Step 4: Determine the Incorrect Statement
After analyzing both statements:
- The first statement about nucleophilic addition is correct.
- The second statement, while it has some truth, is misleading due to the use of the term "high dosage," which is not a standard term in chemistry related to solubility.

### Conclusion
The statement that is not correct is the one that refers to "high dosage" in relation to the solubility of lower molecular weight aldehydes and ketones in water.

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