1.

The van der Waal equation of gas is `(P + (n^(2)a)/(V^(2))) (V - nb) = nRT`A. (i) `CO_(2)` , (ii) `H_(2)`B. (i) `CH_(4)` , (ii) `CO_(2)`C. (i) `H_(2)` , (ii) `CO_(2)`D. `O_(2)`, (ii) `H_(2)`

Answer» Correct Answer - A
(i) Order of intermolecular attraction is `CO_(2)gt CH_(4)gt O_(2)gt H_(2)`
In `CO_(2)`, intermolecular forces increases with number of electrons in a molecule.
(ii) Size increases in order of `H_(2)lt O_(2)CH_(4)lt CO_(2)` Hence, `H_(2)` will have lowest value of b.


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