Maltose on treatment with dilute HCl gives

Options

A. D-Galactose
B. D - Fructose
C. D-Glucose and D-Fructose
D. D-Glucose

Explanation

To solve the question regarding the reaction of maltose with dilute HCl, we can follow these steps:

### Step 1: Identify Maltose
Maltose is a disaccharide composed of two glucose units. It is formed by the glycosidic linkage between two alpha-D-glucose molecules.

### Step 2: Structure of Maltose
The structure of maltose can be represented as:
- Two alpha-D-glucose units connected by an α(1→4) glycosidic bond.
- The structure includes hydroxyl (OH) groups and a glycosidic oxygen (O) linking the two glucose units.

### Step 3: Reaction with Dilute HCl
When maltose is treated with dilute hydrochloric acid (HCl), the acid hydrolyzes the glycosidic bond. This reaction involves the addition of water (H2O) and the release of H+ ions from HCl, which leads to the breaking of the glycosidic bond.

### Step 4: Products of Hydrolysis
The hydrolysis of maltose results in the formation of two molecules of alpha-D-glucose. Thus, the products of the reaction are:
- 2 molecules of alpha-D-glucose.

### Step 5: Conclusion
Therefore, when maltose is treated with dilute HCl, it yields two molecules of D-glucose.

### Final Answer
The correct answer is: **D-glucose**.

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