alleryThe five membered ring form of fructose is called the:
AFormazan form
BFuranose form
CFumarate form
DFerrocene form
Answer & Solution
Correct answer: B. Furanose form
1. The hydroxyl at carbon five closes the ring.
2. Four carbons and one oxygen make up the ring.
3. It is named after furan, so furanose.
_Source: syllabus Chemistry Part 2, Unit 10 'Biomolecules'_
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