The volume of gases `H_(2), CH_(4), CO_(2)` and `NH_(3)` adsorbed by 1 g of charcoal at 288K are in the order :

The volume of gases NH_(3), CO_(2) and CH_(4) adsorbed by one gram of charcoal at 298 K are in

the volume of gases NH_(3) , CO_(2) and H_(2) adsorbed by one gram of characoal at 300 K are in order of :

Adsorption is a surface phenomenon and it differs feom adsorption which occurs throughout the body of the substance which absorbs. In physisorption, the attractive forces are mainly van der Waals' forces while in chemisorption actual bonding occurs between the particles of adsorbent and adsorbente. Generally, easily liquefying gases are adsorbed more easily on the surface of a solid as compared to teh gases whihc are liquefied with difficult. Adsorption increases with the increases in pressure and decreases as the temperature is increases. The ease with which the gases H_(2),CH_(4),CO_(2)and NH_(3) are adsorbed on the surface of charcoal is :

The bond angles in molecules H_(2)O, NH_(3), CH_(4) and CO_(2) are in the order :

(i) At 298 K the volume of NH_(3) adsorbed by 1 g of charcoal is higher than that of H_(2) under similar conditions. (ii) The movement of colloidal particles towards the oppositely charged electrodes on passing current is known as Brownian movement. If T for true and F for false then correct option is :

Only the surface atoms in an adsorbent play an active role in adsorption. These atoms possess some residual force such as van der Waals forces and chemical forces. In the process of adsorption. Weak adsorbate is substituting by strong adsorbete. Activated charcoal used in the gas mask is already exposed to the atmospheric air, so gases and water vapours in air are adsorbed on its surface. When the mask is exposed to chlorine atmosphere, the gases are displaced by chlorine. In general, easily liquefiable gases such as CO_(2),NH_(3),Cl_(2), and SO_(2) are adsorbed to a greater extent than the elemental gases, e.g., H_(2),N_(2),O_(2), He, etc. Gas mask works on the principle of