Question

Which of the following is ketohexose ?

• A. Glucose
• B. Sucrose
• C. Fructose
• D. Ribose

Hint:

Fructose is ketohexose, while glucose is aldohexose.

Answer 1

The Correct Option is C

Step 1: Understand ketohexose.
Ketohexose means:
- keto = contains ketone group
- hexose = contains 6 carbon atoms
Step 2: Identify among options.
Glucose is an aldohexose (aldehyde + 6 carbons).
Sucrose is a disaccharide, not a monosaccharide.
Ribose is a pentose (5 carbons).
Fructose is a monosaccharide with 6 carbons and a ketone group, hence ketohexose.
Final Answer:
\[ \boxed{\text{(C) Fructose}} \]