Which of the following is not a property of colloidal solution?

Options

A. Heterogenceity
B. Particle size `gt` 1000 nm
C. Tyndall effect
D. Brownian movement

Explanation

To determine which of the following is not a property of colloidal solutions, we will analyze each option based on the characteristics of colloids.

### Step-by-Step Solution:

1. **Understanding Colloidal Solutions**:
- Colloidal solutions consist of two phases: the dispersed phase (particles) and the dispersion medium (liquid or gas). They are heterogeneous mixtures.

2. **Analyzing the First Option - Heterogeneity**:
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