Shown below are adsorption isotherms for a gas 'X' at temperatures T1 , T2 and T3 :
p and \(\frac xm\) represent pressure and extent of adsorption, respectively. The correct order of temperatures for the given adsorption is:
1. T1 > T2 > T3
2. T3 > T2 > T1
3. T1 = T2 = T3
4. T1 = T2 > T3