Question

Which of the following statements is/are incorrect?

• A. Glucose is non reducing sugar
• B. Sucrose is reducing sugar
• C. Maltose is non reducing sugar
• D. Lactose is non reducing sugar

Answer 1

Answer: (A), (B), (C), (D)

The correct options are
A Glucose is non reducing sugar
B Sucrose is reducing sugar
C Maltose is non reducing sugar
D Lactose is non reducing sugar

All options are incorrect.
Glucose, maltose and lactose are reducing sugars. These sugars contain aldehyde or ketonic groups that are oxidised to carboxylic acids.
Sucrose is non reducing sugar. It does not have any group, which can be reduced to -$OH$ group by chemical reaction.