Lactose is a disaccharide of $......$.

Glucose and mannose are.......

Statement $I$. Despite having an aldehyde group,glucose does not give the Schiff test.
Statement $II$. Glucose exists in $\alpha$ and $\beta$ crystalline forms.

From the given following ($A$ and $B$) cyclic structures, those which will not react with Tollen's reagent are :

The sugar moieties in $DNA$ and $RNA$ molecules respectively are:

Identify the glycosidic linkage present in maltose.