The intermediate compound formed in the conversion of $Starch$ to $Glucose$ is

The two functional groups present in a typical carbohydrate are:

Which of the following is not a biopolymer?

The hydrolysis of sucrose produces a mixture which is:

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:

$\alpha - D - $glucose and $\beta - D - $glucose differ from each other due to the difference in the configuration of one specific carbon atom. This carbon atom is known as the: