Which organic functional group is present in carboxylic acids?
A
Hydroxyl group
B
Carboxyl group COOH
C
Carbonyl group
D
Amino group
Correct Answer: Option B — Carboxyl group COOH
Explanation:
The carboxyl group COOH is the functional group present in all carboxylic acids and is responsible for their acidic properties as it can donate a proton to a base.