Which reagent among the following is used to confirm the presence of an aldehydic carbonyl group in glucose?

Determine the $D$ and $L$ configuration for the carbohydrates shown in the image.

Which of the following statements is correct?

Which of the following represents the anomer of the compound shown?

Anomers of glucose are defined as:

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: