Target Exam

CUET

Subject

Chemistry

Chapter

Organic: Biomolecules

Question:

Boiling of Sucrose with water in the presence of acid ($H^+$) will give:

Options:

Glucose and Fructose

Cellulose and Glucose

Cellulose and Fructose

Starch and Glucose

Correct Answer:

Glucose and Fructose

Explanation:

The correct answer is Option (1) → Glucose and Fructose

Core Concept:

Sucrose undergoes acid-catalysed hydrolysis to form its constituent monosaccharides.

Explanation:

Sucrose is a disaccharide composed of glucose and fructose units linked through a glycosidic bond. When sucrose is boiled with water in the presence of acid, hydrolysis of the glycosidic bond occurs. This reaction breaks sucrose into its two constituent monosaccharides — glucose and fructose — forming invert sugar.

Option 1: Glucose and Fructose

Correct because acid hydrolysis splits sucrose into its monosaccharide components.

Option 2: Cellulose and Glucose

Incorrect because cellulose is a polysaccharide and cannot be formed by hydrolysis of sucrose.

Option 3: Cellulose and Fructose

Incorrect because cellulose is not related to sucrose hydrolysis.

Option 4: Starch and Glucose

Incorrect because starch is a polysaccharide formed from glucose units and is not produced from sucrose hydrolysis.