MHT CET Chemistry question

Which of the following statements is correct about fructose?

(A)It is dextrorotatory compound
(B)It exists in the two cyclic forms which is obtained by the addition of OH at C - 5 to the >C=O groupCorrect
(C)It exists as six membered ring
(D)It is named as furanose as it contain one oxygen and six carbon atom

Answer: (B)

Solution

Fructose is laevorotatory (so (a) is false), and per NCERT its two cyclic forms arise when the -OH at C-5 adds to the C=O group at C-2 forming a five-membered furanose ring;

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Question ID VK-083502