Glucose $\xrightarrow{HCN} A$ $\xrightarrow{Hydrolysis} B$ $\xrightarrow{HI, \Delta} C$. What is the final product $C$?

$A$ carbohydrate $(A)$,when treated with dilute $HCl$ in alcoholic solution,gives two isomers $(B)$ and $(C)$. $B$ on reaction with bromine water gives a monocarboxylic acid '$Z$',and '$C$' is a ketohexose. What is $A$?

$\alpha-D$-glucose and $\beta-D$-glucose differ from each other due to the difference in the configuration of their carbon atom at:

Starch is formed by the linkage of which carbons of glucose units?

$\alpha-D-(+)$-glucose and $\beta-D-(+)$-glucose are

Which of the following statements support the cyclic form for glucose?
$(i)$ It does not give Schiff's test.
$(ii)$ It is found to exist in two different crystalline forms.
$(iii)$ It oxidises with nitric acid to give saccharic acid.
$(iv)$ Pentaacetate of glucose does not react with hydroxylamine.