Question

Cheese is a colloidal solution of __________

Answer 1

There are three types of solutions, i.e., true solutions, colloidal solutions, and suspensions. When the size of the solute particles is between 1 nm to 1000 nm and so they are called a heterogeneous solution. There are many types of colloidal solutions like sols, solid sols, aerosols, gels, emulsion, solid foam, and foam.

Complete answer:
There are three types of solution based on the size of the solute particles in the solution, i.e., true solutions, colloidal solutions, and suspensions. When the size of the solute particles is less than 1 nm then it is categorized as a true solution when the size of the solute particles is between 1 nm to 1000 nm then it is categorized as a colloidal solution, and when the size of the particles is more than 1000 nm then it is categorized as suspensions.
Like solution having solute which is in lesser quantity and solvent which is in larger quantity, the colloidal solution also has dispersed phase which is in lesser quantity and dispersion medium which is in larger quantity.
There are many types of colloidal solutions like sols, solid sols, aerosols, gels, emulsion, solid foam, and foam.
Cheese is an example of gel in the colloidal systems, in which the dispersed phase is a liquid while the dispersion medium is a solid. Other examples of gel are butter, jellies, etc.
So, cheese is a colloidal solution liquid in solid.

Note:
Colored glasses, gemstones are an example of solid in the solid colloidal system. Milk, hair cream, etc are examples of liquid in the liquid colloidal system. Whipped cream, soap lather, etc are examples of gas in the liquid colloidal system.