In which of the following classes of organic compounds is an oxygen atom bonded to a hydrogen atom?

Question

Quizplus · Accepted Answer

The functional group for carboxylic acids is -COOH, which consists of a carbonyl group (C=O) and hydroxyl group (-OH) bonded to the same carbon atom. The hydrogen atom is bonded to the hydroxyl group. Aldehydes have a carbonyl group (C=O) bonded to at least one hydrogen atom, but not necessarily an oxygen atom bonded to a hydrogen atom. Ketones have a carbonyl group bonded to two other carbon atoms. Therefore, only carboxylic acids have an oxygen atom bonded to a hydrogen atom.

In Which of the Following Classes of Organic Compounds Is