Physical adsorption is also called physisorption.
Physical adsorption refers to the type of adsorption in which the adsorbate particles are clenched on the adsorbent surface by the weak van der Waals forces.
Physical adsorption is reversible due to weak bonding forces.
Physical adsorption enhances with increasing surface area.
Physical adsorption creates multimolecular layers.
Physical adsorption is usually procured at low temperatures.
Final Answer:
Physical adsorption refers to the weak and reversible adsorption occurring at the surface of the adsorbent.