Which of the following will show Tyndall effect? — Surface Chemistry Chemistry Question

💡 Solution & Explanation

The Tyndall effect is exhibited by colloidal dispersions. Sodium stearate behaves as an associated colloid (micelle) only above its Critical Micelle Concentration (CMC) and above its Krafft temperature. Below CMC or in a sugar solution, true solutions are formed with particles too small to scatter light effectively. Therefore, correct answer is A,C.