The disperse phase, dispersion medium and nature of colloidal solution (lyophilic or lyophobic) of ..gold sol.. respectively are:

Options

A. Solid, solid, lyophobic
B. Liquid, liquid, lyophobic
C. Solid, liquid, lyophobic
D. Solid, liquid. lyophilic

Explanation

To solve the question regarding the disperse phase, dispersion medium, and nature of the colloidal solution for gold sol, we can break it down into the following steps:

### Step-by-Step Solution:

1. **Identify the Disperse Phase**:
- In a colloidal solution, the disperse phase is the substance that is dispersed throughout the medium. For gold sol, the disperse phase consists of solid gold particles.
- **Disperse Phase**: Solid gold particles.

2. **Identify the Dispersion Medium**:
- The dispersion medium is the substance in which the disperse phase is distributed. In the case of gold sol, the dispersion medium is a liquid, typically water or another solvent.
- **Dispersion Medium**: Liquid (usually water).

3. **Determine the Nature of the Colloidal Solution**:
- Colloidal solutions can be classified as either lyophilic (solvent-attracting) or lyophobic (solvent-repelling). Gold sol is a type of metal sol, which is generally considered to be lyophobic because the solid gold particles do not have a strong affinity for the liquid medium.
- **Nature of Colloidal Solution**: Lyophobic colloid.

### Final Answer:
- **Disperse Phase**: Solid gold particles
- **Dispersion Medium**: Liquid (water)
- **Nature of Colloidal Solution**: Lyophobic colloid