(a)
Interpretation:
The Fischer projection for the open-chain form of the given unknown sugar and its name is to be stated.
Concept introduction:
A Fischer projection is used for the representation of a three dimensional structure into two dimensional form. It is used for distinguishing between D and L configuration.
(b)
Interpretation:
The most stable conformation of the most stable cyclic hemiacetal form of the given sugar and the corresponding systematic name is to be stated.
Concept introduction:
The most stable cyclic conformation involves the presence of heavier groups at the equatorial position and lighter groups at the axial positions so as to avoid any steric hindrance.
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