Which one of the following sets of monosaccharides forms sucrose ?

Options

A. `alpha`- D - galactopyranose and `alpha` - D - glucopyranose
B. `alpha`-D - glucopyranose and `beta` - D - fructofuranose
C. `beta` - D - glucopyranose and `alpha` - D - fructofuranose
D. `alpha`- D - glucopyranose and `beta` - D - fructopyranose

Answer

B

Explanation

Sucrose is a disaccharide of `alpha` - D- Glucopyranose and `beta` - D-fructofuranose.