On hydrolysis, sucrose gives an equimolar mixture of D-(+)-glucose and D-(−)-fructose. What is the dextrorotation of glucose?
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → +52.5°
NCERT (2026-27 edition):
10.1.3 Disaccharides – “Sucrose is dextrorotatory but after hydrolysis gives dextrorotatory glucose and laevorotatory fructose. Since the laevorotation of fructose (–92.4°) is more than dextrorotation of glucose (+ 52.5°), the mixture is laevorotatory.”