Assertion :- An increase in surface area increases the rate of evaporation.
Reason :- Stronger the inter-molecular attractive forces, fast is the rate of evaporation at a given temperature.

Options

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

Answer

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

### Step-by-Step Solution:

1. **Understanding the Assertion**:
- The assertion states that "An increase in surface area increases the rate of evaporation."
- This is true because a larger surface area allows more molecules to escape from the liquid into the vapor phase, thus increasing the rate of evaporation.

2. **Understanding the Reason**:
- The reason states that "Stronger the intermolecular attractive forces, fast is the rate of evaporation at a given temperature."
- This statement is false. Stronger intermolecular forces actually hinder the evaporation process because they hold the molecules more tightly together, making it harder for them to escape into the vapor phase.

3. **Conclusion**:
- Since the assertion is true and the reason is false, we can conclude that the assertion is correct but the reason is incorrect.

### Final Answer:
- The assertion is true, but the reason is false.