Identify colloids from the following :
Copper sulphate solution, milk, smoke, muddy water, butter, sugar solution, face cream, lemonade.

Explanation

To identify the colloids from the given list, we will analyze each substance based on the definition of colloids.

### Step-by-Step Solution:

1. **Understand the Definition of Colloids**:
- Colloids are homogeneous mixtures where one substance (the dispersed phase) is distributed evenly throughout another substance (the continuous phase). They consist of large molecules or particles that do not settle out over time.

2. **List the Given Substances**:
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