Sugar, salt, monosodium glutamate and peanut oil are all common condiments in the kitchen, and four

A. White sugar is easily soluble in water, and sucrose molecules are uniformly dispersed in water to form uniformity.

1. The stable mixture belongs to the solution, so A is wrong; Inside.

B. Salt is easily soluble in water, and sodium ions and chloride ions are uniformly dispersed in water to form uniformity.

1. The stable mixture belongs to the solution, so B is wrong;

C. MSG is easily soluble in water and forms uniformly.

1. The stable mixture belongs to the solution, so C is wrong;

D. Peanut oil is insoluble in water, and mixed with water to form an emulsion, which is uneven.

1. Unstable and does not belong to the solution, so D is correct

So choose D