The letter '$D$' in carbohydrates represents

Maltose on hydrolysis gives two monosaccharide units. The incorrect statement about the monosaccharides formed is

Which part of lactose is a reducing sugar?

For the complex conversion of $D^{-}$-glucose into the corresponding osazone,the minimum number of equivalents of phenylhydrazine required is:

Starch,when boiled with dilute sulphuric acid under high pressure,gives compound $A$. On prolonged heating with hydroiodic acid,$A$ gives compound $B$. What is the compound $B$?

$Starch$ consists of two fractions; one is $\alpha-amylose$ and the other is