| 1. Pentose |
| 2. Hexose |
| 3. Aldose |
| 4. Ketose |
| 5. Pyranose |
| 6. Furanose |
A) 1, 3 and 6
B) 1, 3, and 5
C) 2, 3 and 5
D) 2, 3 and 6
E) 1, 4 and 6
Correct Answer: A
Solution :
This compound contains five carbon atoms, so it is a pentose. Its first carbon contains\[-H\] and\[-OH\]group. This suggests that it is an aldose (ie, contains aldehyde group). Since its structure is similar to furan (a heterocyclic compound), so it has furanose structure. Hence, this compound is a pentose, aldose and have furanose structure.
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