Which of the following is correct

Options

A. Evaporation of water causes an increase in disorder of the system
B. Melting of ice causes a decrease in randomness of the system
C. Condensation of steam causes an increase in disorder of the system
D. There is practically no change in the randomness of the system when water is evaporated

Explanation

To solve the question, we need to analyze each statement regarding changes in disorder (entropy) during different phase transitions of water. Let's go through the statements one by one.

### Step-by-Step Solution:

1. **Statement 1: Evaporation of water causes an increase in disorder of the system.**
- **Analysis:** Evaporation is the process where water (liquid) changes into water vapor (gas). In the gaseous state, water molecules have more freedom of movement compared to the liquid state, leading to increased randomness or disorder. Therefore, this statement is **correct**.

2. **Statement 2: Melting of ice causes a decrease in randomness of the system.**
- **Analysis:** Melting is the transition from solid (ice) to liquid (water). In the solid state, molecules are closely packed and have limited movement. When ice melts, the molecules gain energy and move more freely, resulting in increased randomness. Hence, this statement is **incorrect**.

3. **Statement 3: Condensation of steam causes an increase in disorder of the system.**
- **Analysis:** Condensation is the process where steam (gas) changes back to water (liquid). During this transition, the molecules lose energy and become more ordered as they come closer together. Therefore, this results in a decrease in randomness. Thus, this statement is **incorrect**.

4. **Statement 4: There is practically no change in the randomness of the system when water is evaporated.**
- **Analysis:** As previously established, evaporation leads to an increase in disorder as water transitions from liquid to gas. Therefore, this statement is also **incorrect**.

### Conclusion:
The only correct statement is **Statement 1: Evaporation of water causes an increase in disorder of the system**.