in the adsorption of a gas on solid Freundlich isotherms is Obeyed the slope of the plot is zero then the extend of adsorption is
A.directly proportional to the pressure of the gas.
B.inversly proportional to the pressure of the gas.
C.directly proportional to the square root of the pressure of the gas.
D.inversly proportional to the square root of the pressure of the gas.
E.independent of the pressure of the gas.
