Assertion : Natural rubber is soft, sticky and has less tensile strength.
Reason : Natural rubber is a polymer of 2-methyl buta-1, 3-diene monomers.

Options

A. Assertion and reason both are correct statements and reason is correct explanation for assertion.
B. Assertion and reason both are correct statements but reason is not correct explanation for assertion.
C. Assertion is correct statement but reason is wrong statement.
D. Assertion is wrong statement but reason is correct statement.

Answer

To solve the question regarding the assertion and reason about natural rubber, we can break it down into clear steps:

### Step 1: Understand the Assertion
The assertion states that "Natural rubber is soft, sticky, and has less tensile strength."

- **Explanation**: Natural rubber, which is derived from latex obtained from rubber trees, indeed possesses these characteristics. It is classified as an elastomer, which means it can be stretched and will return to its original shape. This property contributes to its softness and stickiness, as well as its relatively low tensile strength when compared to other materials.

### Step 2: Analyze the Reason
The reason states that "Natural rubber is a polymer of 2-methyl buta-1,3-diene monomers."

- **Explanation**: The monomer 2-methyl buta-1,3-diene, also known as isoprene, is indeed the building block of natural rubber. When these monomers polymerize, they form long chains that make up the structure of natural rubber. This statement is also correct.

### Step 3: Evaluate the Relationship Between Assertion and Reason
Now we need to determine if the reason correctly explains the assertion.

- **Evaluation**: While both the assertion and reason are correct, the reason does not adequately explain why natural rubber has the properties mentioned in the assertion. The properties of being soft, sticky, and having less tensile strength are primarily due to its classification as an elastomer rather than solely due to the specific monomer it is derived from.

### Conclusion
Both the assertion and the reason are correct, but the reason does not effectively explain the assertion. Therefore, the correct answer to the question is that both statements are true, but the reason is not the correct explanation for the assertion.

### Final Answer:
- Assertion: True
- Reason: True
- Explanation: The reason does not explain the assertion correctly.

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