| 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 |
A)
Lyophilic Lyophobic I and II III and IB
B)
Lyophilic Lyophobic I and III II and IV
C)
Lyophilic Lyophobic II and IV I and III
D)
Lyophilic Lyophobic II and III I and IV
Correct Answer: C
Solution :
[c] 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 passing electric current. Thus, lyophilic - II, IV lyophobic - I, III
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