Pick out the wrong statement:

Options

A. Micelles are formed by surfactant molecules above the CMC
B. The conductivity of a solution having surfactant molecules decreases sharply at the CMC
C. Lower is the CMC of detergent, more is its detergency
D. Cleansing action is not related to micelle.

Answer

D

Explanation

Cleaning action is due to micellisation and emulsifying action. Also point(b) is wrong because at cmc, conductivity of soltuion either becomes constant or show a little increase after cmc with increasing concentration of surfactant.