Question:
Compound A gives D-Galactose and D-Glucose on hydrolysis. The compound $\mathbf{A}$ is :
Correct Option: , 4
Solution:
Lactose : It is a disaccharide of $\beta$-D-Galactose and $\beta-\mathrm{D}-\mathrm{Glucose}$ with $\mathrm{C}_{1}$ of galactose and $\mathrm{C}_{4}$ of glucose link.
Lactose : $\beta-\mathrm{D}-$ Galactose $+\beta-\mathrm{D}-$ Glucose