Which one of the following compounds is found abundantly in nature?

Identify the non-reducing sugar.

Which glycosidic linkage between galactose and glucose is present in lactose?

The Haworth projection shown below represents:

Which of the following statements is not correct?

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: