What will occur if a block of copper metal is dropped into a beaker containing a solution of 1M ZnSO₄?

The total number of orbitals associated with the principal quantum number 5 is :

The solubility of N₂ in water at 300 K and 500 torr partial pressure is 0.01 g L⁻¹. The solubility (in g L⁻¹) at 750 torr partial pressure is :

A particular adsorption process has the following characteristics : (i) It arises due to van der Waals forces and (ii) it is reversible. Identify the correct statement that describes the above adsorption process :