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.
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.✓ Correct
Answer: (D)
Solution
Sucrose has a specific rotation of about and is dextrorotatory. On hydrolysis it gives equal amounts of D-glucose () and D-fructose (); the net rotation is negative, so the product mixture (invert sugar) is laevorotatory, which makes Statement I true. Statement II ascribes this to the laevorotation of glucose exceeding the dextrorotation of fructose, but in fact glucose is dextrorotatory and fructose laevorotatory, and it is the larger laevorotation of fructose that outweighs the dextrorotation of glucose, so Statement II is false. Hence Statement I is true but Statement II is false.
JEE Main · 2026 · 22 Jan 2026 · Shift 1 · Single correct option