Which of the following is NOT an example of homogeneous mixture?

Correct option is D

The correct answer is (D) oil in water.

Explanation:

1. Homogeneous Mixture:
• A homogeneous mixture is one in which the components are evenly distributed and form a single phase.
• Examples include solutions like saltwater or sugar dissolved in water.
2. Analysis of Options:
• Copper sulphate powder in water: Forms a homogeneous mixture as the copper sulphate dissolves completely.
• Sugar dissolved in water: Homogeneous mixture as sugar dissolves uniformly.
• Salt dissolved in water: Homogeneous mixture due to complete dissolution.
• Oil in water: NOT a homogeneous mixture, as oil does not dissolve in water and forms a separate layer, making it a heterogeneous mixture.