Which of the following is not correct?

Options

A. Milk is a naturally occurring emulsion
B. Gold sol is a lyophilic sol
C. Physical adsorption decreases with rise in temperature
D. Chemical adsorption is unilayered

Explanation

To determine which of the statements is not correct, we will analyze each statement one by one.

### Step 1: Analyze the First Statement
**Statement 1:** "Milk is a naturally occurring emulsion."
- **Analysis:** Milk is indeed an emulsion, which is a mixture of two immiscible liquids where one is dispersed in the other. In milk, fat droplets are dispersed in water, making this statement correct.

### Step 2: Analyze the Second Statement
**Statement 2:** "Gold sol is a lyophilic sol."
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