What type of forces are involved in binding of substrate to the active site of enzyme ?

Explanation

Drugs the catalytic action of an enzyme hold the substrate for a chemical reaction. Active sites of enzymes holds the substrate molecules in a suitable positions, so than it can be attacked by the reagents effectively.
Substrate bind to the active site of the enzymes through a variety of interactions. These forces are van der Waal's interactions, ionic bonding, hydrogen bonding or dipole-dipole interaction.