Hydrolysis of sucrose gives:

With which reagent does glucose react to form a crystalline osazone derivative?

Which of the following is an aldohexose?

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:

Which carbon atom of glucopyranose numbered from $C-1$ to $C-6$ is anomeric?

The specific rotations of $\alpha-$ and $\beta-$ glucose are different. When either is dissolved in water,their rotation changes until a constant value is reached. This phenomenon is called ......