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Multiple Choice
Which of the following functional groups is present in alcohols?
A
Carboxyl group
B
Carbonyl group
C
Hydroxyl group
D
Amino group
Verified step by step guidance
1
Identify the functional groups listed in the problem: Carboxyl group, Carbonyl group, Hydroxyl group, and Amino group.
Recall the structure of an alcohol. Alcohols are organic compounds that contain one or more hydroxyl groups (-OH) attached to a carbon atom.
Understand the characteristics of each functional group: The carboxyl group contains a carbon double-bonded to an oxygen and single-bonded to a hydroxyl group (COOH). The carbonyl group contains a carbon double-bonded to an oxygen (C=O). The hydroxyl group consists of an oxygen and hydrogen atom bonded together (-OH). The amino group contains a nitrogen atom bonded to hydrogen atoms (NH2).
Compare the structure of an alcohol with the structures of the functional groups listed. Notice that the hydroxyl group (-OH) is the defining feature of alcohols.
Conclude that the functional group present in alcohols is the hydroxyl group, as it matches the structural requirement of alcohols.