Question

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

(a) (+) lactose, C₁₂H₂₂O₁₁ contains 8 (–OH) groups.

(b) On hydrolysis, (+) lactose gives equal amounts of D(+) glucose and D(+) galactose.

(c) (+) Lactose is a β – glycoside formed by the union of a molecule of D(+) glucose and a molecule of D(+) galactose.

(d) (+) Lactose is a reducing sugar and does not exhibit muta rotation.

Answer 1

(d) (+) Lactose is a reducing sugar and does not exhibit mutarotation.