Assertion : During rainy season, doors made up of wood generally swell up due to imbibition.
Reason : This happens due to absorption of water without forming a solution

Options

A. If both Assertion and Reason are true and Reason is correct explanation of Assertions.
B. If both Assertion and Reason are true but Reason is not correct explanation of Assertion.
C. If Assertion is true but Reason is false.
D. If both Assertion and Reason are false.

Answer

To analyze the given assertion and reason, let's break it down step by step.

### Step 1: Understand the Assertion
The assertion states that during the rainy season, doors made of wood swell up due to imbibition.

**Hint:** Imbibition is a process where water is absorbed by a solid without forming a solution.

### Step 2: Analyze the Reason
The reason provided is that this swelling happens due to the absorption of water without forming a solution.

**Hint:** Consider how water interacts with wood and whether it leads to a solution or just absorption.

### Step 3: Confirm the Truth of the Assertion
During the rainy season, the humidity increases, and wood absorbs moisture from the air. This absorption causes the wood fibers to expand, leading to swelling. Therefore, the assertion is true.

**Hint:** Think about the physical properties of wood and how they change with moisture.

### Step 4: Confirm the Truth of the Reason
The reason states that the absorption occurs without forming a solution. In the case of wood, water is absorbed into the cell walls and spaces without chemically reacting to form a new solution. Thus, the reason is also true.

**Hint:** Reflect on the definition of imbibition and how it applies to the absorption process in wood.

### Step 5: Determine the Relationship Between Assertion and Reason
Since both the assertion and the reason are true, and the reason correctly explains why the assertion occurs, we can conclude that the reason is a correct explanation of the assertion.

**Hint:** Look for the logical connection between the two statements to determine if one explains the other.

### Conclusion
Both the assertion and the reason are true, and the reason is a correct explanation of the assertion. Therefore, the correct option is that both assertion and reason are true, and the reason is a correct explanation of the assertion.

**Final Answer:** Both assertion and reason are true, and reason is a correct explanation of assertion.