Which is a reducing sugar?

Question

Which is a reducing sugar? (A) Galactose (B) Gluconic acid (C)  β -methyl galactoside (D) Sucrose

Tardigrade Admin · Accepted Answer

Glucose, fructose, mannose, galactose are hexose monosaccharides. The monosac charides have free aldehyde or ketone group which can reduce Cu++ to Cu . Therefore, these are called reducing sugars.

Q. Which is a reducing sugar?

Galactose

Gluconic acid

$β$ -methyl galactoside

Sucrose

Glucose, fructose, mannose, galactose are hexose monosaccharides. The monosac charides have free aldehyde or ketone group which can reduce $C u^{++}$ to $C u$ . Therefore, these are called reducing sugars.