Name type of absorption in which van der Waal's forces are present.

Name the type of adsorption in which compound is formed.

Name the type of association

Name two types of chromatin.

The units of constants a in van der Waal's equation is

_________ is the process is which adsorbate molecules are held on the surface of the adsorbent by weak van der Waals forces.

Define hydrogen bond. Is it weaker or stronger than the vander Waals forces?

Name the type of circulation in flatworms.

Name the types of poisonous snakes.

Name the types of telescopes.

Name the two types of solids.