Question

Sucrose (cane sugar) is a disaccharide. One molecule of sucrose on hydrolysis gives ______.

Options

• 2 molecules of glucose

• 2 molecules of glucose + 1 molecule of fructose

• 1 molecule of glucose + 1 molecule of fructose

• 2 molecules of fructose

Answer 1

Sucrose (cane sugar) is a disaccharide. One molecule of sucrose on hydrolysis gives 1 molecule of glucose + 1 molecule of fructose.

Explanation:

One of the common disaccharides is sucrose which on hydrolysis gives equimolar mixture of D – (+) – glucose and D – (–) – fructose.

$$\mathrm{C}{\phantom{A}}_{12}\underset{\mathrm{Sucrose}}{\mathrm{H}{\phantom{A}}_{22}}\mathrm{O}{\phantom{A}}_{11}+\mathrm{H}{\phantom{A}}_2\mathrm{O}⟶\underset{\mathrm{D}-(+)-\mathrm{Glucose}}{\mathrm{C}{\phantom{A}}_6\mathrm{H}{\phantom{A}}_{12}\mathrm{O}{\phantom{A}}_5}+\underset{\mathrm{D}-(-)-\mathrm{Fructose}}{\mathrm{C}{\phantom{A}}_6\mathrm{H}{\phantom{A}}_{12}\mathrm{O}{\phantom{A}}_5}$$