Which among the following statements is incorrect for glucose?

Which of the following molecules serves as fibrous content of food only and is useful for bowel movement in humans?

Match the structures in Row $I$ with their names in Row $II$.
Row $I$:
$(P)$ $\alpha-D-(+)-$Glucopyranose
$(Q)$ $\beta-D-(+)-$Glucopyranose
$(R)$ $\alpha-D-(-)-$Fructofuranose
$(S)$ $\beta-D-(-)-$Fructofuranose
Row $II$:
$(i)$ $\alpha-D-(-)-$Fructofuranose
$(ii)$ $\beta-D-(-)-$Fructofuranose
$(iii)$ $\alpha-D-(+)-$Glucopyranose
$(iv)$ $\beta-D-(+)-$Glucopyranose
Correct match is:

$C_{1}-C_{4}$ glycosidic bond is not found in

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

$A$ carbohydrate consists of