Which of the following features are related to evaporation of water?
(i) Occurs at 100°C only (ii) Bubbles are formed (iii) Slow process (iv) Increases with increase in surface area

Options

A. (i) and (iv) only
B. (i), (ii) and (iii) only
C. (ii), (iii) and (iv) only
D. (iii) and (iv) only

Explanation

To determine which features are related to the evaporation of water, we will analyze each statement one by one.

### Step-by-Step Solution:

1. **Evaluate Statement (i): "Occurs at 100°C only."**
- Evaporation does not only occur at 100°C; it can happen at any temperature. Even at lower temperatures, water can evaporate. Therefore, this statement is **incorrect**.

2. **Evaluate Statement (ii): "Bubbles are formed."**
- Bubbles are typically associated with boiling, not evaporation. During evaporation, water changes from liquid to vapor without forming bubbles. Hence, this statement is also **incorrect**.

3. **Evaluate Statement (iii): "Slow process."**
- Evaporation is indeed a slow process. For example, a wet cloth takes time to dry as the water gradually evaporates. Thus, this statement is **correct**.

4. **Evaluate Statement (iv): "Increases with increase in surface area."**
- The rate of evaporation increases with an increase in surface area. For instance, a wet cloth that is spread out dries faster than one that is crumpled. Therefore, this statement is also **correct**.

### Conclusion:
Based on the evaluations:
- Statement (i) is incorrect.
- Statement (ii) is incorrect.
- Statement (iii) is correct.
- Statement (iv) is correct.

Thus, the features related to the evaporation of water are **(iii) and (iv)**.