The repeating unit of glycogen is

The number of possible stereoisomers of glucose is:

Carbohydrates,which are the most abundant biomolecules on Earth,are produced by:

Which of the following contains lactose?

Aqueous solution of carbohydrate with $2$ drops of alcoholic solution of $\alpha$-naphthol and $H_{2}SO_{4}$ gives a ring at the junction. The colour of the ring is:

Which sugar is found in fruit juices?