MHT CET 2023 Chemistry question

What is the number of -OH groups present in one molecule of ribose?

(A)2
(B)3
(C)4Correct
(D)5

Answer: (C)

Solution

Ribose is an aldopentose, , with the open-chain structure OHC-CHOH-CHOH-CHOH-CH_2OH. It has an aldehyde group (-CHO) at C-1 and one -OH group on each of the carbons C-2, C-3, C-4 and C-5, so there are 4

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Question ID VK-097281