Assertion : Maltose and lactose are examples of reducing sugars.
Reason : Maltose and lactose reduce Fehling’s solution and Tollens’ reagent.

Options

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

Answer

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

### Step 1: Understanding the Assertion
The assertion states that "Maltose and lactose are examples of reducing sugars."

- **Reducing Sugars**: These are sugars that can act as reducing agents because they have a free aldehyde or ketone group. Common examples include glucose, fructose, maltose, and lactose.

### Step 2: Evaluating the Assertion
Maltose and lactose are indeed reducing sugars. Maltose is a disaccharide composed of two glucose units, and lactose is a disaccharide made up of glucose and galactose. Both contain free aldehyde or ketone groups that allow them to act as reducing agents.

### Step 3: Understanding the Reason
The reason states that "Maltose and lactose reduce Fehling’s solution and Tollens’ reagent."

- **Fehling’s Solution**: This is a chemical test used to identify reducing sugars. When a reducing sugar is present, it reduces the copper(II) ions in Fehling's solution to copper(I) oxide, which precipitates as a red solid.

- **Tollens’ Reagent**: This is another test for reducing sugars. It contains silver ions that are reduced to metallic silver when a reducing sugar is present, resulting in a silver mirror on the test container.

### Step 4: Evaluating the Reason
Both maltose and lactose can indeed reduce Fehling’s solution and Tollens’ reagent due to their reducing sugar properties. Therefore, the reason is also correct.

### Step 5: Conclusion
Since both the assertion and the reason are correct, and the reason correctly explains the assertion, we conclude that:

- **Assertion**: True
- **Reason**: True
- **Explanation**: The reason is a correct explanation of the assertion.

### Final Answer
Both the assertion and the reason are true, and the reason is the correct explanation of the assertion.