For ‘invert sugar’, the correct statement(s) is/are: (Given: Specific rotations of (+)-sucrose, (+)-maltose, L-(–)-glucose and L-(+)-fructose in aqueous solution are +66o,+140o,–52o and +92o respectively)
A
Specific rotation of invert sugar is −20o
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B
Specific rotation of invert sugar is +20o
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C
‘Invert sugar’ is an equimolar mixture of D-(+)-glucose and D-(–)-fructose
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D
‘Invert sugar’ is prepared by acid catalyzed hydrolysis of maltose
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Solution
The correct options are A Specific rotation of invert sugar is −20o C ‘Invert sugar’ is an equimolar mixture of D-(+)-glucose and D-(–)-fructose C12H22O11H+−−→H2OC6H12O6D−(+)−glucose+C6H12O6D−(−)−fructose
Specific rotation of D-(+)-glucose is +52o and that of D-(-)-fructose is −92o.