
Sucrose is not a reducing sugar because:
A.) It is chemically stable.
B.) It contains no free aldehyde or keto group adjacent to a group.
C.) It is built up of a fructose unit.
D.) It is optically active.
Answer
511.2k+ views
2 likes
Hint: To solve this question we need to know that non reducing sugars are those carbohydrates that does not contain free aldehyde and ketone functional groups in them and sucrose is a non- reducing agent.
Complete step by step answer:
Sucrose is a disaccharide carbohydrate. By disaccharide carbohydrates we mean carbohydrates which is composed of two monosaccharides. The two saccharides from which sucrose is made are glucose and fructose. Sucrose has the molecular formula .
Sucrose is formed when Glucose and fructose combine and release a water molecule and then the sucrose is obtained. The structure of the sucrose can be given as :
Non- reducing sugars are those sugars which do not have free aldehyde or ketone groups in them. In sucrose, the two monosaccharides that are glucose and fructose are linked together by glycosidic linkage between carbon of glucose and carbon of fructose. As we can see that glucose and fructose are involved in glycosidic bonds and thus sucrose cannot participate in the reaction to get reduced. Hence, sucrose is a non- reducing sugar because of no free aldehyde or ketone adjacent to the group.
Hence, option B is the correct answer.
Note:
We should remember that reducing sugars are those sugars which have free aldehyde and ketone groups in them and all monosaccharides are reducing sugars. Also reducing sugars can reduce Fehling’s solution and tollen’s reagent.
Complete step by step answer:
Sucrose is a disaccharide carbohydrate. By disaccharide carbohydrates we mean carbohydrates which is composed of two monosaccharides. The two saccharides from which sucrose is made are glucose and fructose. Sucrose has the molecular formula
Sucrose is formed when

Non- reducing sugars are those sugars which do not have free aldehyde or ketone groups in them. In sucrose, the two monosaccharides that are glucose and fructose are linked together by glycosidic linkage between carbon
Hence, option B is the correct answer.
Note:
We should remember that reducing sugars are those sugars which have free aldehyde and ketone groups in them and all monosaccharides are reducing sugars. Also reducing sugars can reduce Fehling’s solution and tollen’s reagent.
Latest Vedantu courses for you
Grade 11 Science PCM | CBSE | SCHOOL | English
CBSE (2025-26)
School Full course for CBSE students
₹41,848 per year
Recently Updated Pages
Master Class 12 Economics: Engaging Questions & Answers for Success

Master Class 12 Maths: Engaging Questions & Answers for Success

Master Class 12 Biology: Engaging Questions & Answers for Success

Master Class 12 Physics: Engaging Questions & Answers for Success

Master Class 12 Business Studies: Engaging Questions & Answers for Success

Master Class 12 English: Engaging Questions & Answers for Success

Trending doubts
Which one of the following is a true fish A Jellyfish class 12 biology CBSE

Which are the Top 10 Largest Countries of the World?

a Tabulate the differences in the characteristics of class 12 chemistry CBSE

Why is the cell called the structural and functional class 12 biology CBSE

Differentiate between homogeneous and heterogeneous class 12 chemistry CBSE

Derive an expression for electric potential at point class 12 physics CBSE
