Some of the properties given below are for colloidal sols.(I) Viscosity is same as that of the medium.(II) Extensive hydration takes place.(III) Migration of the particles under electric field.(IV) Particles cannot be detected even under ultramicroscope.Properties applicable for lyophilic and lyophobic colloidal sols are
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a
Lyophilic LyophobicI and II III and IV
b
Lyophilic LyophobicI and III II and IV
c
Lyophilic LyophobicII and IV I and III
d
Lyophilic LyophobicII and III I and IV
answer is C.
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Detailed Solution
In lyophilic colloidal sol, extensive hydration takes place and their particles cannot be detected even under ultra-microscope. In lyophobic colloidal sol, viscosity is same as that of the medium and particles migrate towards anode or cathode on passing electric current.Thus, lyophilic - II, IVlyophonic - I, III