Identify the product of the following reaction: $(C_6H_{10}O_5)_n + nH_2O \xrightarrow[393 \ K, 2-3 \ atm]{H^+} ?$

Which of the following set of molecules give the same osazone when reacted with an excess of phenylhydrazine?

Which of the following carbohydrates does not show mutarotation?

Compound $A$ gives $D$-Galactose and $D$-Glucose on hydrolysis. The compound $A$ is:

The functional groups involved in the conversion of glucose to gluconic acid and gluconic acid to saccharic acid respectively are

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: