Albumin protein is a...

Which mixture of the solutions will lead to the formation of a negatively charged colloidal $[AgI]I^{-}$ sol?

When a sulphur sol is evaporated,sulphur is obtained. On mixing with water,the sulphur sol is not formed. The sol is

Tyndall effect is observed only when:
$(i)$ the diameter of the dispersed particles is not much smaller than the wavelength of the light used.
$(ii)$ the refractive indices of the dispersed phase and the dispersion medium differ greatly in magnitude.
$(iii)$ the size of the particles is generally between $10^{-11} \ m$ and $10^{-9} \ m$ in diameter.
$(iv)$ the dispersed phase and the dispersion medium can be seen separately in the system.

Gold sol is an electronegative sol. The amount of electrolyte required to coagulate a certain amount of gold sol is minimum in the case of

Which of the following electrolytes is least effective in causing flocculation of ferric hydroxide sol?