EAMCET Engineering 2008 Solved Paper

On hydrolysis with dilute aqueous sulphuric acid, sucrose gives a equimolar mixture of D- (+) glucose and D-(-)-fructose.

C12H22O11

sucrose

+H2O

H2SO4

→

C6H12O6

D−(+)‌glucose

+

C6H12O6

D−(−)‌fructose

Sucrose is dextrorotatory but after hydrolysis gives dextrorotatory glucose and laevorotatory fructose, laevorotatory fructose is more, so the mixture is laevorotatory.