Which of the following is NOT a characteristic of ketones?

Ketones are a class of organic compounds characterized by a carbonyl group (C=O) connected to two carbon atoms. Among the options presented, the characteristic related to fats and oils is not typical of ketones.

Ketones are not commonly found in fats and oils, as these substances are primarily composed of triglycerides, which consist of glycerol bonded to fatty acids. While some fats may contain small amounts of ketones during metabolic processes, they are not identified as a principal component of fats and oils themselves.

The other options highlight valid characteristics of ketones: they do indeed have a strong odor (often noted in small chain ketones), they can form hydrogen bonds with water due to the presence of the polar carbonyl group, and they are generally polar molecules, which allows them to interact well with polar solvents like water. This understanding is crucial in distinguishing ketones from other types of functional groups and understanding their behavior in various chemical environments.