Question

Match the following

Name of the sugar	Hydrolysis Product
A. Sucrose	i. Glucose + Fructose + Galactose
B. Lactose	ii. Glucose + Fructose
C. Maltose	iii. Glucose + Galactose
D. Raffinose	iv. Glucose + Glucose

A. A-iii, B-ii, C-i, D-iv
B. A-ii, B-iii, C-i, D-iv
C. A-ii, B-iii, C-iv, D-i
D. A-ii, B-iv, C-iii, D-i

Answer 1

We are given four sugars sucrose, lactose maltose and raffinose. To solve this we must know what forms when the given sugars are hydrolysed. Hydrolysis is the breakdown of the sugar on reaction with water.

Complete answer:
We are given four sugars: sucrose, lactose maltose and raffinose.
We have to find the hydrolysis products of the given four sugars sucrose, lactose maltose and raffinose. Hydrolysis is the breakdown of the sugar on reaction with water.
Sucrose is common sugar. It is a disaccharide made up of two monosaccharides. The two monosaccharides that make up sucrose are glucose and fructose. Glucose and fructose are linked together by a glycosidic bond. When sucrose is hydrolysed, the glycosidic bond between glucose and fructose breaks and sucrose is converted to glucose and fructose. Thus, the hydrolysis products of sucrose are glucose + fructose.
Thus, A-ii.
Lactose is a large sugar molecule. It is a disaccharide made up of two monosaccharides. The two monosaccharides that make up lactose are glucose and galactose. Glucose and galactose are linked together by a glycosidic bond. When lactose is hydrolysed, the glycosidic bond between glucose and galactose breaks and sucrose is converted to glucose and galactose. Thus, the hydrolysis products of sucrose are glucose + galactose.
Thus, B-iii.
Maltose is a disaccharide made up of two monosaccharides. The two monosaccharides that make up lactose are two glucose molecules. The two glucose molecules are linked together by a glycosidic bond. When maltose is hydrolysed, the glycosidic bond between the two glucose molecules breaks and maltose is converted to two glucose molecules. Thus, the hydrolysis products of maltose are glucose + glucose.
Thus, C-iv.
Raffinose is a trisaccharide made up of three monosaccharides. The three monosaccharides that make up raffinose are glucose, fructose and galactose. Glucose, fructose and galactose are linked together by glycosidic bonds. When raffinose is hydrolysed, the glycosidic bonds between glucose, fructose and galactose break and raffinose is converted to glucose, fructose and galactose. Thus, the hydrolysis products of raffinose are glucose + fructose + galactose.
Thus, D-i.

**Thus, the correct option is (C) A-ii, B-iii, C-iv, D-i.

Note:**
Sucrose, lactose and maltose are disaccharides. Disaccharides are formed when two monosaccharides are joined by glycosidic bonds. Raffinose is a trisaccharide. Trisaccharides are formed when three monosaccharides are joined by glycosidic bonds.