NTA Abhyas NEET2020ChemistryBiomoleculesPractice
Which one of the following statements is not true regarding (+) lactose?
Options
- AOn hydrolysis, (+) lactose give equal amount of D(+) glucose and D(+) galactose
- B(+) Lactose is a β -glucoside formed by the union of a molecule of D(+) glucose and a molecule of D(+) galacto
- C(+) Lactose is a reducing ugar and does not exhibit mutarotation
- D(+) Lactose, C 12 H 22 O 11 contains 8 - O H groups
Correct answer
C. (+) Lactose is a reducing ugar and does not exhibit mutarotation
Step-by-step solution
Lactose(milk sugar) is a disaccharide comprising one glucose molecule linked to a galactose molecule by an β ( 1 → 4 ) -glycosidic linkage.Lactosehas a beta acetal. Like cellobiose and maltose,lactoseis a reducing sugar. All reducing sugar undergo mutarotation in aqueous solution.