The qualitative sketches I, II and III given below show the variation of surface tension with molar concentration of three different aqueous solutions of KCl,CH3OH and CH3(CH2)11OSO−3Na+ at room temperature.
The correct assignment of the sketches is:
![478168.png](https://search-static.byjusweb.com/question-images/toppr_ext/questions/478168.png)