Surface ChemistryHard
Question
Which of the following statement is/are correct:-
(a) Tyndall effect is observed only when the diameter of dispresed particle is not much smaller than the wavelength of the light used.
(b) The refractive indices of the dispersed phase & dispersion medium differ greatly in magnitude
(c) Ultramicroscope renders the actual colloidal particles visible
(d) Finest gold sol is golden as the size of particle increases it appears purple & finally red.
(a) Tyndall effect is observed only when the diameter of dispresed particle is not much smaller than the wavelength of the light used.
(b) The refractive indices of the dispersed phase & dispersion medium differ greatly in magnitude
(c) Ultramicroscope renders the actual colloidal particles visible
(d) Finest gold sol is golden as the size of particle increases it appears purple & finally red.
Options
A.a,b,c & d
B.b, c & d
C.b & c
D.Only c