Question

The right option for the statement ''Tyndall effect is exhibited by'', is :

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Answer 1

Tyndall effect:
If a strong beam of ​light is passed​ through colloidal sols placed in dark,​ then path of the beam ​gets illuminated. This effect is called Tyndall effect.
This effect arises due to scattering of light by colloidal​ particles in all directions . Thus, scattering of light illuminates the path of beam in the colloidal dispersion​.
It is used to distinguish between ​a colloid and a true solution​.
True solution does not show Tyndall effect but colloidal solution shows​.

Only starch solution is colloidal, hence, "Tyndall effect is exhibited by starch solution".