Question

Which of the following are reducing sugars?
$\underset{(A)}{\mathrm{Sucrose}},\underset{(B)}{\mathrm{Maltose}},\underset{(C)}{\mathrm{Lactose}},\underset{(D)}{\mathrm{Fructose}}$

• A. A, B, C
• B. A, B, D
• C. A, C, D
• D. B, C, D

Answer 1

Answer: (D)

The species which contain free $-CHO$ group are reducing sugars.

(A) Sucrose is a non-reducing sugar.

(B) Maltose is a reducing sugar.

(C) Lactose is a reducing sugar.

(D) Fructose is a reducing sugar.