Identify the glycosidic linkage present in lactose.

Starch and cellulose are compounds made up of many ...... units.

The reaction of concentrated sulphuric acid with carbohydrates $(C_{12}H_{22}O_{11})$ is an example of

$\alpha$-maltose consists of

On prolonged heating with $HI$,glucose gives a compound '$C$',which can be obtained by Wurtz reaction using sodium metal and compound '$D$'. Identify '$D$'.

How do $\alpha-D-$glucose and $\beta-D-$glucose differ from each other with respect to the $C-1$ carbon?