How will you distinguish between dispersed phase and dispersion medium in an emulsion?

What is the physical state of the dispersed phase in an emulsion?

The protective power of a lyophilic colloidal sol is expressed in terms of

Ferric chloride is used to stop bleeding. This is because .......

Which of the following is responsible for the stability of hydrophilic sols?

Consider the following statements about the Tyndall effect:
$(I)$ It is used to distinguish between a true solution and a colloidal solution.
$(II)$ It is possible only when the refractive indices of the dispersed phase and the dispersion medium differ significantly.
$(III)$ It is observed only when the size of the colloidal particles is much smaller than the wavelength of the light used.
Which of the following statements are correct?