JEE Main Chemistry question

Which one of the following sets of monosaccharides forms sucrose?

(A)β-D-Glucopyranose and α-D-fructofuranose
(B)α-D-Galactopyranose and α-D-Glucopyranose
(C)α-D-Glucopyranose and β-D-fructopyranose
(D)α-D-Glucopyranose and β-D-fructofuranoseCorrect

Answer: (D)

Solution

Sucrose is formed from α-D-glucopyranose joined through its C1 to the C2 of β-D-fructofuranose (the furanose, not pyranose, ring form of fructose in this linkage), via a 1,2-glycosidic bond involving both anomeric carbons. The

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Question ID VK-150933