Which will be adsorbed more readily on the surface of charcoal and why`-NH_(3)` or `CO_(2)`?

Amongst SO_(2) , H_(2) which will be adsorbed more readily on the surface of charcoal and why ?

Which will be adsorbed more readily on the surface of charcoal , NH_3 or CO_2 ?

Out of the following gases which will be adsorbed more readily on the surface of charcoal : NH_3 gt CO_2 gt O_2

Of NH_3 and N_2 which gas will be adsorbed more readily on the surface of charcoal and why?