Which of the following statement is true about mixtures?

The correct answer No chemical reaction is involved in making a mixture.

Concept:

Mixtures:

• A mixture is a substance that consists of two or more elements or compounds not chemically combined together.
• For Example - Air is a mixture of gases like oxygen, nitrogen, argon, CO2, and water vapour. 

Explanation:

Types of Mixtures:

Homogeneous Mixture:

• Those mixtures, in which the substances are completely mixed together and are indistinguishable from one another, are called homogeneous mixtures.
• For example Soda water, Soft drinks, lemonade, salt or sugar solution, etc.

Heterogeneous Mixture:

• Those mixtures in which the substances remain separate and one substance is spread throughout the other substance as small particles, droplets, or bubbles are called heterogeneous mixtures.
• All the suspensions and colloids are heterogeneous mixtures.
• For Example: - Sugar and sand mixture, muddy river water, soap solution.