Glycosidic linkage between $C_1$ of $\alpha -$ glucose and $C_2$ of  $\beta -$ fructose is found in

Maltose is composed of two glucose units
Sucrose has glycosidic linkage between  $C_1$ of$\alpha -$  glucose and $C_2$  of $\beta -$  fructose Lactose is composed of galactose and glucose
Amylose has glycosidic linkage between  $C_1$ of $\alpha -$ glucose and $C_4$ of $\alpha -$ glucose