Emulsions are also called the colloidal solutions in which the disperse phase as well as dispersion medium are liquids. It may be oil-in-water or water-inoil type Emulsifiers can be sued to stabilize the emulsion. Soaps, detergents, proteins, and gums are used as emulsifiers.
Addition of lyophilic solution to the emulsion forms

Options

A. A protective film around the dispersed phase
B. A protective film around the dispersion medium.
C. An aerosol
D. True solution

Answer

To solve the question regarding the effect of adding a lyophilic solution to an emulsion, we can follow these steps:

### Step 1: Understand the Definition of Emulsions
Emulsions are colloidal solutions where both the disperse phase and the dispersion medium are liquids. They can be classified into two types: oil-in-water (O/W) and water-in-oil (W/O).

### Step 2: Identify the Role of Emulsifiers
Emulsifiers, such as soaps, detergents, proteins, and gums, are substances that help stabilize emulsions by reducing the surface tension between the two immiscible liquids.

### Step 3: Define Lyophilic Colloids
Lyophilic colloids are colloids that have a strong affinity between the dispersed phase and the dispersion medium. This affinity allows them to easily mix and stabilize the emulsion.

### Step 4: Analyze the Effect of Adding a Lyophilic Solution
When a lyophilic solution is added to an emulsion, it interacts with the dispersed phase (the smaller quantity) and the dispersion medium (the larger quantity). The lyophilic colloid forms a protective layer around the dispersed phase, enhancing the stability of the emulsion.

### Step 5: Conclusion
The addition of a lyophilic solution to an emulsion forms a protective layer around the dispersed phase, which helps to stabilize the emulsion. Therefore, the correct answer is that it forms a protective film around the dispersed phase.

### Final Answer
The addition of a lyophilic solution to the emulsion forms a protective layer around the dispersed phase.

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