question_answer 50)

    Which of the following will show Tyndall effect? (a) Aqueous solution of soap below critical micelle concentration (b) Aqueous solution of soap above critical micelle concentration (c) Aqueous solution of sodium chloride (d) Aqueous solution of sugar

Answer:

                    (b) Aqueous solution of soap above critical micelle concentration lead to formation of colloidal solution. Tyndall effect is a characteristic of colloidal -solution in which colloidal particles show a coloured appearance when sunlight is passes through it and seen from the perpendicular side.