41. The structure of a disaccharide M (molecular mass 342) is given below. Hydrolysis of the disaccharide gives two monosaccharides X and Y. Acetylation using acetic anhydride is one of the methods used in structure determination of carbohydrates. On the basis of the structure of M given below, select the correct option(s). (A) M is a non-reducing sugar. (B) On hydrolysis, M gives one aldohexose and one aldopentose. (C) If the specific rotation (α ) of X, Y and M are +52, 74 and +29 respectively, the mixture of X and Y, obtained upon hydrolysis of M is laevorotatory. (D) 0.171 g of M requires 0.153 g of acetic anhydride for complete acetylation.

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Q. The structure of a disaccharide

M

(molecular mass

342

) is given below. Hydrolysis of the disaccharide gives two monosaccharides

X

and

Y

. Acetylation using acetic anhydride is one of the methods used in structure determination of carbohydrates. On the basis of the structure of

M

given below, select the correct option(s).

Carbohydrates are classified on the basis of their behaviour on hydrolysis and also as reducing or non-reducing sugar. Sucrose is ............. .
(a) monosaccharide (b) disaccharide
(c) reducing suager (d) non-reducing sugar

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