Answer: Option (D) is the correct answer.
Explanation:
A mixture in which solute particles are non-uniformly distributed in the solute is known as a heterogeneous mixture.
For example, when mud is mixed into water then the solution formed is a heterogeneous mixture.
It particles of the solute are heavier then they will settle at the bottom but if they are not heavy then they might be suspended or float on the surface.
It is known that particles in a mixture never interact chemically with each other.
Thus, we can conclude that over time, the particles in a heterogeneous mixture will not settle out, is a false statement.