The number of chiral centres present in the linear structure of glucose are three.

Number of stereo centers present in linear and cyclic structures of glucose are respectively:

 The correct observation in the following reaction is:

$\mathrm{Sucrose}\underset{}{\overset{\mathrm{Glycosidic} \mathrm{bond} \mathrm{Cleavage} \left(\mathrm{Hydrolysis}\right)}{\to }}\mathrm{A}+\mathrm{B}\underset{}{\overset{\mathrm{Seliwanoff} \mathrm{Reagent}}{\to }}?$

The following carbohydrate is

Identify the product $\mathrm{Y}$ in following reaction $\mathrm{Maltose}\stackrel{ \mathrm{Hydrolysis} }{⟶}\mathrm{X}\underset{\left(\mathrm{excess}\right)}{\overset{\mathrm{dil}.{\mathrm{HNO}}_3}{\to }}\mathrm{Y}$