Q.

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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a

I, II, III,IV are correct

b

I, II, III are correct

c

I, II are correct

d

I only

answer is B.

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Detailed Solution

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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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