Select the incorrect statements.

1. Wool has a higher chance of insect attack than cotton.
2. Synthetic materials are used to make the kitchen wear aprons.
3. Nylon absorbs less water than polyester.
4. Polymers are always made by the addition of Monomers.
    

The given statements can be evaluated as follows:

Statement 1: Wool has a higher chance of insect attack than cotton.
This statement is incorrect. Wool is actually more resistant to insect attack than cotton because its fibers have a complex structure that makes it difficult for insects to digest. In contrast, cotton fibers are simpler in structure and therefore more vulnerable to insect damage.

Statement 2: Synthetic materials are used to make the kitchen wear aprons.
This statement is potentially true, as synthetic materials like polyester or nylon are often used to make kitchen wear aprons. However, it is not an absolute statement as some aprons can also be made from natural fibers like cotton or linen.

Statement 3: Nylon absorbs less water than polyester.
This statement is incorrect. Nylon has a higher tendency to absorb water compared to polyester. In fact, nylon can absorb up to 4-5% of its weight in water, while polyester can absorb only 0.4-0.5% of its weight in water.

Statement 4: Polymers are always made by the addition of monomers.
This statement is incorrect. While addition polymerization is a common method for making polymers, polymers can also be made through condensation polymerization, which involves the elimination of a small molecule such as water or alcohol during polymerization.

Therefore, statements 1, 3, and 4 are incorrect.