Q.

For ‘invert sugar’, the correct statement(s) is (are) : (Given : specific rotations of (+)-sucrose, (+)-maltose, L-(-)-glucose and L-(+)-fructose in aqueous solution are  +660,+1400, -520 and +920, respectively)

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a

‘invert sugar’ is prepared by acid catalyzed hydrolysis of maltose

b

‘Invert sugar’ is an equimolar mixture of D-(+) glucose and D-(-)-fructose

c

on reaction with Br2 water, ‘invert sugar’ forms saccharic acid as one of the products.

d

specific rotation of ‘invert sugar’ is -200

answer is B, C.

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Detailed Solution

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Invert sugar is equimolar mixture of D-glucose and D-fructose which is obtained by hydrolysis of sucrose

            Specific rotation of mixture is half of sum of sp.  Rotation of both components

+520+(920)2=200

Question ImageD-glucose (sp. rotation +52o) + D - fructose ( sp. rotation - 92o)

Sucrose sp. rotation + 66o

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