Chemistry - Surface Chemistry Question with Solution | TestHub

A: True — Micelles form only when surfactant concentration exceeds the critical micellization concentration (CMC). Below CMC, molecules stay as monomers.

B: True — At CMC, conductivity shows a break or change in slope (often appearing as a decrease in the rate of increase) because ions start forming micelles and mobility changes.

C: True — Micelle formation occurs above CMC, and CMC depends on temperature (it usually first decreases, then increases with rising temperature).

D: True — Micelles are associated colloids, meaning they behave like normal electrolytes at low concentration but form colloidal particles above CMC.