The reaction which suggest that glucose has one carbonyl group is
I) Glucose + HCN
II) Glucose + NH₂OH
III) Glucose + HI
IV) Glucose + conc. HNO₃

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I, II, III,IV are correct

I, II are correct

I only

I, II, III are correct

answer is B.

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Detailed Solution

Glucose reacts with hydroxylamine to form an oxime and adds a molecule of hydrogen cyanide to give cyanohydrin. These reactions
confirm the presence of a carbonyl group (>C = 0) in glucose

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