Which of the following is/are true of colloidal solutions?
I. Groups of molecules clump together in colloidal solutions to form small particles.
II. A laser beam cannot be seen when it is passed through colloidal solutions.
III. A laser beam can be seen clearly when it is passed through colloidal solutions.
IV. Incident light passes through colloidal solutions without scattering/

Question

Quizplus · Accepted Answer

I. True, because in colloidal solutions, particles are aggregates of atoms or molecules that are typically 1 nm to 1 µm in size, which is larger than simple molecules but small enough to remain suspended.III. True, because the Tyndall effect is a phenomenon where light is scattered by particles in a colloid or in a very fine suspension, making a laser beam visible when it passes through a colloidal solution.

Which of the Following Is/are True of Colloidal Solutions