Which of the following is lyophilic sol?

Options

A. Silver sol
B. `As_2S_3` sol
C. Sulphur sol
D. Gelatin sol

Answer

To determine which of the following is a lyophilic sol, we need to understand the characteristics of lyophilic and lyophobic sols.

### Step 1: Define Lyophilic Sols
Lyophilic sols are colloidal systems that have a strong affinity between the dispersed phase (the particles) and the dispersion medium (the solvent). This strong interaction allows lyophilic sols to be stable and easily formed. Common examples include substances like gum, gelatin, and starch.

### Step 2: Identify Examples
From the information provided, we know that:
- **Gum sol**: This is a lyophilic sol because it has a strong affinity for water.
- **Gelatin**: This is also a lyophilic sol, as it forms a stable colloidal solution in water.
- **Starch**: This is another example of a lyophilic sol, as it can form a gel-like structure in water.

### Step 3: Analyze the Options
If the question provides multiple options, we need to identify which one of them is a lyophilic sol. Based on our understanding:
- If one of the options is gum, gelatin, or starch, that would be the correct answer.
- Any other options that do not fit these examples would likely be lyophobic sols.

### Step 4: Conclusion
After analyzing the options, we can conclude which one is a lyophilic sol.

### Final Answer
The correct answer is the option that lists a lyophilic sol, such as gum, gelatin, or starch.

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