Answer. Oligosaccharides give 2 to 9 units of monosaccharide on hydrolysis. Therefore, they are classified as disaccharides, trisaccharides, tetrasaccharides, etc., depending upon the number of units they produce on hydrolysis. The most important oligosaccharides are disaccharides like sucrose. On hydrolysis sucrose produces one unit of glucose and one unit of fructose.
Dit HCI
C12H22O11 + H2O C6H12O6 + C6H12O6
sucrose heat glucose fructose
These carbohydrates are white, crystalline solids easily soluble in water. They are also
sweet in taste. They may be reducing or non-reducing in action.