Glycosidic linkage in carbohydrates is called

What are the two forms of $D$-glucopyranose obtained from a $D$-glucose solution called?

Which of the molecules below will react with $Ag^{+}$ (Tollens' reagent)?

Which of the following statements are true about carbohydrates?
$(i)$ Monosaccharides can be hydrolysed.
$(ii)$ The two monosaccharide units obtained on hydrolysis of a disaccharide can either be same or different.
$(iii)$ Polysaccharides are non-sweet in taste.
$(iv)$ All monosaccharides are not reducing sugars.

The number of chiral carbon atoms present in the open-chain structure of $D-(-)$-fructose is:

How do you explain the absence of aldehyde group in the pentaacetate of $D$-glucose?