Select the correct observation in the following isotherm: (where, xm= amount of the adsorbate adsorbed per gram of the adsorbent)

This represents Freundlich's adsorption isotherm.(1)  Along XY⋅xm∝p0= constant. Thus, correct. (2) When point X is reached, saturation is attained (there is no further adsorption), hence desorption may start. Thus, correct.(3) xm∝(p)1/n along OX. Thus, correct.