SSC CHSL 2024 PYQ — Question 30

The correct answer is option 4 i.e. The amount of electrolyte required for the coagulation of a definite amount of a colloidal solution is dependent on the valency of the coagulating ion.

The Hardy-Schulze rule states that the amount of electrolyte required to coagulate a specific amount of colloidal solution is directly influenced by the valency of the coagulating ion. Essentially, ions with higher valency are more effective in neutralizing the charge on colloidal particles, leading to coagulation. For instance, divalent or trivalent ions will require a smaller concentration compared to monovalent ions to achieve the same coagulation effect. This principle is essential in understanding colloidal stability and is widely applied in fields such as chemistry, water treatment, and food technology, where colloidal systems are prevalent.