$A$ carbohydrate consists of

How many moles of acetic acid are obtained in the reaction when one mole of glucose is treated with excess acetic anhydride (in $moles$)?

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:

Glucose and fructose form:

Which of the following carbohydrates does not show mutarotation?

The two functional groups present in a typical carbohydrate are: