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  4. Which of the following is an example of ketohexose ?

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Q. Which of the following is an example of ketohexose ?

AMUAMU 2019

Solution:

Fructose, it has ketonic group . So, it is keto hexose sugar
$\underset{\text{Sucrose}}{{C_{12}H_{22}O_{11}}}+H_{2}O\xrightarrow[\text{ Hydrolysis}]{} \underset{\text{(With aldohyde group)}}{\text{Glucose (aldohexose sugar)}}+\underset{\text{(With ketone group)}}{\text{Fructose (ketohexose sugar)}}$
Structure of glucose and fructose is as follows
image