Given below are two statements:
Statement I : Sucrose is dextrorotatory. However sucrose upon hydrolysis gives a solution having mixture of products. This solution shows laevorotation.
Statement II : Hydrolysis of sucrose gives glucose and fructose. Since the laevorotation of glucose is more than the dextrorotation of fructose the resulting solution becomes laevorotatory.
In the light of the above statements, choose the correct answer from the options given below.
- A
Statement I is false but Statement II is true.
- B
Both Statement I and Statement II are false.
- C
Both Statement I and Statement II are true.
- D
Statement I is true but Statement II is false.
Statement I — sucrose has (dextrorotatory). Hydrolysis (“inversion of sugar”) gives an equimolar mixture of D-glucose () and D-fructose (). The mixture is overall laevorotatory. True.
Statement II has the roles swapped. Glucose is dextrorotatory (), not laevorotatory, while fructose is laevorotatory (). Fructose’s laevorotation outweighs glucose’s dextrorotation, which is why the mixture turns laevorotatory. Statement II is false.
Practice more Chemistry
Concept-wise practice with instant solutions on Fundamenthol.
Start practicing →