Identify a false statement among the following.

Options

A. Evaporation is a surface phenomenon and causes cooling.
B. Rate of evaporation is directly proportional to temperature.
C. Rate of evaporation is inversely propotional to surface area of liquid.
D. Evaporation causes cooling and depends on humidity.

Explanation

To identify the false statement among the given options, we will analyze each statement one by one.

### Step-by-Step Solution:

1. **Statement 1: Evaporation is a surface phenomenon and causes cooling.**
- **Analysis:** This statement is true. Evaporation occurs at the surface of the liquid, and as molecules escape into the atmosphere, they take away energy, leading to cooling.

2. **Statement 2: The rate of evaporation is directly proportional to temperature.**
- **Analysis:** This statement is also true. As the temperature increases, the kinetic energy of the molecules increases, which leads to an increase in the rate of evaporation.

3. **Statement 3: The rate of evaporation is universally proportional to the surface area of the liquid.**
- **Analysis:** This statement is false. The rate of evaporation is directly proportional to the surface area, not universally proportional. This means that a larger surface area increases the rate of evaporation, while a smaller surface area decreases it.

4. **Statement 4: Evaporation causes cooling and depends on humidity.**
- **Analysis:** This statement is true. Evaporation does cause cooling, and it is inversely proportional to humidity; as humidity increases, the rate of evaporation decreases.

### Conclusion:
The false statement among the options is **Statement 3**: "The rate of evaporation is universally proportional to the surface area of the liquid."

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