O/W type emulsion means

Options

A. Oxygen dispersed in water
B. Water dispersed in oxygen
C. Oil dispersed in water
D. Water dispersed in oil

Answer

**Step-by-Step Solution:**

1. **Understanding Emulsions**: Emulsions are colloidal systems where two immiscible liquids are mixed together. In these systems, one liquid is dispersed in the other.

2. **Identifying O/W Type Emulsion**: The notation "O/W" stands for "Oil in Water." This means that oil droplets are dispersed throughout a continuous phase of water.

3. **Characteristics of O/W Emulsions**: In O/W emulsions, the oil is the dispersed phase, and water is the continuous phase. This type of emulsion is commonly found in products like mayonnaise, milk, and lotions.

4. **Distinction from W/O Emulsions**: It is important to differentiate O/W emulsions from W/O (Water in Oil) emulsions, where water droplets are dispersed in oil. In W/O emulsions, oil is the continuous phase, and they are typically thicker and more viscous.

5. **Conclusion**: Therefore, an O/W type emulsion specifically refers to a system where oil is dispersed in water.