Question

Carbohydrate molecules are characterized by any one of the following groups EXCEPT ___________.

• A. aldehyde (CNO)
• B. hydroxyl (OH)
• C. carboxyl (COOH)
• D. ketone (C=O)

Hint:

{Carbohydrates = aldehyde/ketone + hydroxyl groups}.

Answer 1

The Correct Option is C

Step 1: Basic structure of carbohydrates.
Carbohydrates are polyhydroxy aldehydes or ketones.
Step 2: Functional groups present.
They contain hydroxyl groups along with either an aldehyde or ketone group.
Step 3: Identifying the exception.
Carboxyl group (COOH) is not a characteristic functional group of carbohydrates.