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

The compound which does not contain an asymmetric carbon atom is

Write a note on polysaccharides.

The Haworth projection shown below represents:

The difference between amylose and amylopectin is

$A$ 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 $A$?