Whenever a mixture of gases is allowed to come in contact with a particular adsorbent under the same conditions, the more strong adsorbate is adsorbed to greater extent irrespective of its amount present, e.g. H_(2)O is adsorbed to more extent on silica gel than N_(2) and O_(2). This shows that some adsorbates are preferentially adsorbed. It is also observed that preferentially adsorbable adsorbent can displace a weakly adsorbed substance from the surface of an adsorbent. Activated charcoal is prepared by

Whenever a mixture of gases is allowed to come in contact with a parti

1.	Whenever a mixture of gases is allowed to come in contact with a particular adsorbent under the same conditions, the more strong adsorbate is adsorbed to greater extent irrespective of its amount present, e.g. H_(2)O is adsorbed to more extent on silica gel than N_(2) and O_(2). This shows that some adsorbates are preferentially adsorbed. It is also observed that preferentially adsorbable adsorbent can displace a weakly adsorbed substance from the surface of an adsorbent. Activated charcoal is prepared by
Answer» heated charcoal with steam so that it becomes more porous ADDING `Ca_(3)(PO_(4))_(2)` to charcoal adding impurity to charcoal reacted with conc. `HNO_(3)` Answer :A