Question

Which of the following is ketohexose ?

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

Answer 1

Answer: (C)

Fructose

Answer 2

The term hexose refers to the presence of six carbon atoms and term keto shows the presence of ketonic group. Thus, the compound which contains $6 \,C$ atoms and one

group is called ketohexose. Among the given only glucose and fructose are six $C$ compounds. Out of them, glucose contains an aldehyde group while fructose contains a ketonic group. Hence, the example of ketohexose is