What is supernatant liquid?

Explanation

### Step-by-Step Solution:

1. **Understanding the Context**: The term "supernatant liquid" is often used in chemistry, particularly in the context of mixtures that involve solids and liquids.

2. **Defining Supernatant Liquid**: The supernatant liquid is the clear liquid that remains above the solid residue after a mixture has been allowed to settle or after a process like sedimentation.

3. **Example of Supernatant Liquid**: Consider a mixture of mud and water. When this mixture is left undisturbed, the heavier mud particles settle at the bottom of the container (like a beaker), and the clear water remains on top. This clear water is referred to as the supernatant liquid.

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