MHT CET 2026 Chemistry question

Which of the following is confirmed by the reaction of glucose with hydroxylamine?

(A)Straight chain of six carbon atoms
(B)Carbonyl groupCorrect
(C)Primary alcoholic group
(D)Secondary alcoholic group

Answer: (B)

Solution

Hydroxylamine () condenses with aldehyde and ketone carbonyl groups to form oximes. Glucose reacts with hydroxylamine to give glucose oxime: CHO-(CHOH)_4-CH_2OH + NH_2OH \to CH{=}NOH-(CHOH)_4-CH_2OH + H_2O. This shows that glucose contains a carbonyl group (an aldehyde group, as shown

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Question ID VK-098650