JEE Main202622 January 2026Morning ShiftChemistryBiomoleculesActual
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, choos
Options
- AStatement I is true but Statement II is false
- BStatement I is false but Statement II is true
- CBoth Statement I and Statement II are false
- DBoth Statement I and Statement II are true
Correct answer
A. Statement I is true but Statement II is false
Step-by-step solution
Sucrose is dextrorotatory with a specific rotation of +66.5^ . Upon hydrolysis, sucrose breaks down into an equimolar mixture of D-(+)-glucose and D-(-)-fructose. The specific rotation of D-(+)-glucose is +52.5^ (dextrorotatory). The specific rotation of D-(-)-fructose is -92.4^ (laevorotatory). Since the magnitude of laevorotation of fructose ( 92.4^ ) is greater than the magnitude of dextrorotation of glucose ( 52.5^ ), the resulting mixture is laevorotatory. This process is called inversion of sugar. Statement I