Mango float is considered a heterogeneous mixture because it consists of distinct layers and components, such as mango slices, cream, and crushed biscuits or graham crackers. These ingredients do not blend uniformly, and their individual properties remain recognizable, which characterizes a heterogeneous mixture. In contrast, a homogeneous mixture would have a uniform composition throughout.
Homogeneous
Heterogeneous means non-uniform, so mango is arguably heterogeneous; you have the skin, pulp, seed etc. in a mixture, although it is stretching the interpretation of "mixture" when it would be more conventional to consider a single skin, a single seed (mangos have only one seed) and one continuous piece of pulp as discrete parts. The question also ask about "mango", not " a mango" - which implies it is not about a whole fruit. (Many homogeneous mixtures are easily separated - a mixture of powdered sugar and chalk, or a bag of green and red marbles, for instance. Although, again, it depends on what level you are considering the "mixture").
This mixture is not homogeneous.
A mixture like saltwater (Sodium Chloride) is said to be homogeneous because the dissolved particles are not visible. Properties of Sodium Chloride include a greater density then freshwater thus making it easier for objects to float on its interface as well as having a salty flavour.
The meaning of "dissolved" is that a material (solute) form a homogeneous solution.Suspended material float in a liquid but is not soluble; it is a non-homogeneous mixture.
homogeneous
Gelatin is a homogeneous mixture.
The mixture of water and salt is a homogeneous mixture. This is an example using the phrase homogeneous mixture.
Homogeneous mixture-uniform mixture of the element
Air is a homogeneous mixture.
Air is a homogeneous mixture.
A popsickle is a homogeneous mixture.