In α-D-glucopyranose, the -OH at the anomeric carbon (C1) is: 
AAbove the ring (axial up)
BBelow the ring (axial down, equatorial trans to CH₂OH)
CEquivalent to β
DRandom
Answer & Solution
Correct answer: B. Below the ring (axial down, equatorial trans to CH₂OH)
In Haworth projection of α-D-glucopyranose, the C1 -OH points DOWN (below ring), trans to the CH₂OH group. β-anomer has -OH pointing UP. In aqueous solution they interconvert through the open-chain form (mutarotation).
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