Glucose gives a silver mirror with Tollen's reagent. It shows the presence of:

The given osazone can be obtained by:

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:

Carbohydrates are stored in the human body as

Gun-cotton is obtained when conc. nitric acid reacts with

Lactose on hydrolysis gives