A mixture has a definite set of properties.

The correct option is B False

"A mixture is formed when two or more substances are mixed together in any ratio and the constituents particles can be separated by physical means.
Characteristics of Mixture :

1. The constituents of a mixture may be present in any proportion.
2. Only physical change takes place during the formation of a mixture.
3. No energy change takes place during the formation of the mixture.
4. The mixture does not have a fixed melting and boiling point.

Therefore, the given statement is false. i.e., a mixture doesn't have a definite set of properties.