JEE PYQ: Biomolecules And Polymers Question 28
Question 28 - 2020 (06 Sep Shift 2)
Which one of the following statements is not true?
(1) Lactose contains $\alpha$-glycosidic linkage between $\text{C}_1$ of galactose and $\text{C}_4$ of glucose.
(2) Lactose is a reducing sugar and it gives Fehling’s test.
(3) Lactose ($\text{C}{11}\text{H}{22}\text{O}_{11}$) is a disaccharide and it contains 8 hydroxyl groups.
(4) On acid hydrolysis, lactose gives one molecule of D(+)-glucose and one molecule of D(+)-galactose.
Show Answer
Answer: (1)
Solution
Lactose contains $\beta$-glycosidic linkage between $\text{C}_1$ of galactose and $\text{C}_4$ of glucose.
BETA
