Answer:
The answer to your question is: false
Explanation:
Hydrocarbons are molecules composed by Carbon and Hydrogen and they are classified according to the kind of bonds that they have.
Carbonyl group are molecules composed by Carbon, Hydrogen and Oxygen and are classified according to the position of the oxygen, they can be aldehydes or ketones.
Carbohydrates are more complex molecules composed by Carbon, Hydrogen and Oxygen.