Most common chef's knives are not single-beveled. A chef's knife, also known as a cook's knife, is a versatile knife that is designed for a wide range of tasks such as chopping, slicing, and dicing. It is typically double-beveled, which means that it is sharpened on both sides of the blade to create a sharp edge. This makes it a good all-purpose knife that can be used for a variety of tasks. Some chef's knives may be single-beveled, but this is not very common.