Q.

Find out the correct option among the following statements.

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a

In reducing sugars, aldehydic and ketonic group are not free bonded

b

Maltose and lactose are non-reducing sugar

c

Fehling's solution and Tollen's reagent are the non-reducing sugar.

d

All monosaccharides whether akloses or ketoses are reducing sugar

answer is D.

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Detailed Solution

In disaccharides if the reducing groups of monosaccharides, i.e. aldehydic or ketonic groups are bonded, these are non-reducing sugars, e.g. sucrose. The sugar in which these functional groups are free, are called reducing sugar, for example maltose and lactose.
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