All mixtures are homogeneous in nature.
Mixture
In chemistry, when two or more substances are mixed without having any chemical change, then the final substance is known as a Mixture. for example a mixture of salt and water or a mixture of sand and water.
Types of mixture
A Homogeneous mixture is a mixture in which the constituents that make up the mixture are evenly distributed throughout the mixture.
For example, a mixture of salt and water has the same composition of components throughout the mixture.
2. Heterogeneous mixture
When we mix two or more components in a nonuniform composition, that remain separate from each other, that mixture is called a heterogeneous mixture.
For example, a mixture of sand and water has a nonuniform composition of components throughout the mixture.
So, all mixtures are not only homogeneous it may be heterogeneous also.
Therefore, the given statement is false.