Question

Which one of the following statements is not true regarding $(+) $ lactose?

• A. On hydrolysis, $(+)$ lactose gives equal amount of $D(+)$ glucose and $D(+)$ galactose.
• B. $(+)$ Lactose is a $\beta$-glucoside formed by the union of a molecule of $D(+)$ glucose and a molecule of $D(+)$ galactose
• C. $(+)$ Lactose is a reducing sugar and does not exhibit mutarotation
• D. $(+)$ Lactose, $C_{12}H_{22}O_{11}$ contains $8 —OH$ groups

Answer 1

Answer: (C)

$(+)$ Lactose is a reducing sugar and all reducing sugar shows mutarotation