Question:

Which of the following statements is true?

Hydrolysis of sucrose gives dextrorotatory glucose and laevorotatory fructose

Monosaccharides cannot be hydrolysed to give polyhydroxy aldehydes and ketones

Oxidation of glucose with bromine water gives glutamic acid

The two six-membered cyclic hemiacetal forms of D−(+)−glucose are called anomers

Solution:

Correct option is C. Monosaccharides cannot be hydrolysed to give polyhydroxy aldehydes and ketones. The two six-membered cyclic hemiacetal forms of D−(+)−glucose are called anomers (2) Sucrose →H+,H2O Hydrolysis D(+)Glucose[Dextrorotatory] + D(+)Fructose[Laevorotatory] (3) Monosaccharides cannot be hydrolysed to give polyhydroxy aldehydes and ketones (4) Oxidation of glucose with bromine water gives gluconic acid.