NEET 2016 Chemistry question
Which one given below is a non-reducing sugar?
Answer: (4)
Solution
A sugar is reducing if it has a free hemiacetal/hemiketal (free anomeric ) or a free aldehyde group. Glucose has a free aldehyde group (in the open-chain form); maltose (C-1 of one glucose joined to C-4 of the other) and lactose (galactose-glucose, C-1 to C-4) each retain one free
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