Explanation:

Lime juice does not show Tyndall effect because lime juice is a true solution. Their particle size is extremely small to scatter light. So they do not show the Tyndall effect. Whereas Starch solution, few drops of milk mixed with water and Chalk powder freshly mixed with water are colloids and will show the Tyndall effect. A colloid is the kind of solution in which the size of solute particles is intermediate between those in true solutions and those in suspensions. A colloid is not a true solution. The scattering of light by the colloidal particle is known as the Tyndall effect. The scattering of light by the www.gradeup.co 45 colloidal solutions tells us that the colloidal particles are much bigger than the particles of a true solution. The true solution doesn’t scatter a beam of light passing through it, but a colloidal solutions scatters a beam of light passing through it. Colloids are heterogeneous in nature though they appear to be homogeneous.