Identify the following as homogeneous and heterogeneous mixtures.
(i) Sugar dissolved in water.
(ii) Oil and water

Explanation

To determine whether the given mixtures are homogeneous or heterogeneous, we need to understand the definitions of both types of mixtures:

1. **Homogeneous Mixture**: A mixture that has a uniform composition throughout. The components are not distinguishable and exist in a single phase (solid, liquid, or gas).

2. **Heterogeneous Mixture**: A mixture that has a non-uniform composition. The components can be distinguished and exist in two or more phases.

Now, let's analyze the given mixtures one by one:

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