Which one of the following is a reducing sugar?

Glucose,when heated with $CH_3OH$ in the presence of dry $HCl$ gas,gives $\alpha$ and $\beta$-methyl glucosides because it contains:

How many products are produced respectively when optically pure glucose and fructose are reduced one by one by $NaBH_4$?

The glycosidic linkage involved in linking the glucose units in the amylose part of starch is

Identify the trisaccharide from the following.

Which among the following types of linkages is present in cellulose?