Question:
Which of the following is an example of polyhydroxy aldehyde?
Which of the following is an example of polyhydroxy aldehyde?
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Aldoses: have aldehyde group (e.g., glucose, mannose).
Ketoses: have ketone group (e.g., fructose, ribulose).
Suffix "-ose" with "ul" indicates ketose.
Ketoses: have ketone group (e.g., fructose, ribulose).
Suffix "-ose" with "ul" indicates ketose.
Updated On: Aug 18, 2026
- D-Talose
- D-Ribulose
- D-Erythulose
- D-Sorbose
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Verified By Collegedunia
The Correct Option is A
Solution and Explanation
Step 1: Understanding the Concept:
Carbohydrates can be classified as aldoses or ketoses.
Aldoses have an aldehyde group, ketoses have a ketone group.
Step 2: Key Formula or Approach:
No specific formula.
Need to know the classification of sugars.
Step 3: Detailed Explanation:
D-Talose is an aldohexose (polyhydroxy aldehyde).
D-Ribulose is a ketopentose (polyhydroxy ketone).
D-Erythulose is a ketotetrose (polyhydroxy ketone).
D-Sorbose is a ketohexose (polyhydroxy ketone).
Thus, D-Talose is a polyhydroxy aldehyde.
Step 4: Final Answer:
D-Talose is an example of a polyhydroxy aldehyde.
Hence, the correct option is (A).
Carbohydrates can be classified as aldoses or ketoses.
Aldoses have an aldehyde group, ketoses have a ketone group.
Step 2: Key Formula or Approach:
No specific formula.
Need to know the classification of sugars.
Step 3: Detailed Explanation:
D-Talose is an aldohexose (polyhydroxy aldehyde).
D-Ribulose is a ketopentose (polyhydroxy ketone).
D-Erythulose is a ketotetrose (polyhydroxy ketone).
D-Sorbose is a ketohexose (polyhydroxy ketone).
Thus, D-Talose is a polyhydroxy aldehyde.
Step 4: Final Answer:
D-Talose is an example of a polyhydroxy aldehyde.
Hence, the correct option is (A).
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