1.

The volumes of gases H_(2), CH_(4), CO_(2) and NH_(3), adsorbed by 1 g charocal at 298 K are in the order .

Answer»

`H_(2) GT CH_(4) gt CO_(2) gt NH_(3)`
`CH_(4) gt CO_(2) gt NH_(3) gt H_(2)`
`CO_(2)gtCO_(2) gtH_(2) gt CH_(4)`
`NH_(3) gt CO_(2) gt CH_(4) gt H_(2)`

Solution :Greater the critical temperature of a gas, greater is the ADSORPTION. Critical temperatures of the given GASES are as follows: `NH_(3) (406 K), CO_(2) (304 K), CH_(4) (190 K) and H_(2) (33 K)`. Thus adsorption decreases from `NH_(3)` to `H_(2)` in this order.


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