Point out the false statement:

Options

A. Brownian motion and Tyndall effect are shown by colloidal system
B. The colloidal solution of a liquid in liquid is called emulsion
C. Hardy-Schulze law is related with coagulation of a sol
D. Higher is the gold number, greater will be the protective power of a lyophilic colloid

Explanation

To solve the question of identifying the false statement regarding colloidal systems, we will analyze each statement provided in the options.

### Step-by-Step Solution:

1. **Statement 1**: "Brownian motion and Tyndall effect are shown by a colloidal system."
- **Analysis**: This statement is true. Brownian motion refers to the random movement of colloidal particles due to collisions with molecules of the dispersion medium. The Tyndall effect is the scattering of light by colloidal particles, which is also a characteristic of colloidal systems.

2. **Statement 2**: "A colloidal solution of a liquid and liquid is called emulsion."
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