Question
Which of the following is confirmed by the reaction of glucose with hydroxylamine?
MHT CET
Chemistry
Biomolecules
2026
MHT CET 2026 (15 April Shift 1)
MHT CET Chemistry Question (2026) — Solution
Options
- A. Straight chain of six carbon atoms
- B. Carbonyl group
- C. Primary alcoholic group
- D. Secondary alcoholic group
Answer
B. Carbonyl group
Step-by-step solution
Glucose reacts with hydroxylamine (NH_2OH) to form an oxime. This reaction is a characteristic property of aldehydes and ketones, which confirms the presence of a carbonyl group (>C=O) in the glucose molecule. The reaction with hydrogen iodide (HI) confirms the straight chain of six carbon atoms, while oxidation with nitric acid confirms the primary alcoholic group. Answer: Carbonyl group
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