What are $\beta - D - \text{glucose}$ and $\beta - D - \text{galactose}$ known as in relation to each other?

Identify the glycosidic linkage present in maltose.

$\beta-D-(+)-$Glucopyranose is represented by which of the following structures?

$DNA$ molecule contains $4$ bases whose structures are shown below. One of the structures is not correct,identify the incorrect base structure.

Which of the following is a non-reducing disaccharide sugar?

Given below are two statements:
Statement $I$: The two cyclic forms of $D-(+)-glucose$ ($\alpha$ and $\beta$ anomers differing at $C1$ hydroxyl orientation) are two anomers of $D-(+)-glucose$.
Statement $II$: The open chain forms of $D-glucose$ and $D-fructose$ contain three similar chiral carbons at $C3$, $C4$, and $C5$.
In the light of the above statements, choose the correct answer from the options given below: