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  4. Hydrolysis of sucrose with dilute aqueous sulphuric acid yields

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Q. Hydrolysis of sucrose with dilute aqueous sulphuric acid yields

BITSATBITSAT 2008

Solution:

On hydrolysis with dilute aqueous sulphuric acid, sucrose gives a equimolar mixture of $D-(+)$ glucose and $D-(-)$-fructose.
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Sucrose is dextrorotatory but after hydrolysis gives dextrorotatory glucose and laevorotatory fructose, laevorotatory fructose is more, so the mixture is laevorotatory.